diff --git a/shared/src/main/scala/io/kaitai/struct/languages/CSharpCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/CSharpCompiler.scala
index 97693c473..cc1f4597c 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/CSharpCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/CSharpCompiler.scala
@@ -17,7 +17,6 @@ class CSharpCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     with AllocateIOLocalVar
     with EveryReadIsExpression
     with UniversalDoc
-    with FixedContentsUsingArrayByteLiteral
     with SwitchIfOps
     with NoNeedForFullClassPath {
   import CSharpCompiler._
@@ -193,9 +192,6 @@ class CSharpCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.puts("}")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit =
-    out.puts(s"${privateMemberName(attrName)} = $normalIO.EnsureFixedContents($contents);")
-
   override def attrProcess(proc: ProcessExpr, varSrc: Identifier, varDest: Identifier, rep: RepeatSpec): Unit = {
     val srcExpr = getRawIdExpr(varSrc, rep)
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/CppCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/CppCompiler.scala
index b0fdee657..87816452e 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/CppCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/CppCompiler.scala
@@ -16,7 +16,6 @@ class CppCompiler(
 ) extends LanguageCompiler(typeProvider, config)
     with ObjectOrientedLanguage
     with AllocateAndStoreIO
-    with FixedContentsUsingArrayByteLiteral
     with UniversalDoc
     with SwitchIfOps
     with EveryReadIsExpression {
@@ -442,9 +441,6 @@ class CppCompiler(
     outSrc.puts("}")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit =
-    outSrc.puts(s"${privateMemberName(attrName)} = $normalIO->ensure_fixed_contents($contents);")
-
   override def attrProcess(proc: ProcessExpr, varSrc: Identifier, varDest: Identifier, rep: RepeatSpec): Unit = {
     val srcExpr = getRawIdExpr(varSrc, rep)
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/GoCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/GoCompiler.scala
index 49e4343e1..6dc00490f 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/GoCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/GoCompiler.scala
@@ -192,25 +192,6 @@ class GoCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.puts("}")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: Array[Byte]): Unit = {
-    out.puts(s"${privateMemberName(attrName)}, err = $normalIO.ReadBytes(${contents.length})")
-
-    out.puts(s"if err != nil {")
-    out.inc
-    out.puts("return err")
-    out.dec
-    out.puts("}")
-
-    importList.add("bytes")
-    importList.add("errors")
-    val expected = translator.resToStr(translator.doByteArrayLiteral(contents))
-    out.puts(s"if !bytes.Equal(${privateMemberName(attrName)}, $expected) {")
-    out.inc
-    out.puts("return errors.New(\"Unexpected fixed contents\")")
-    out.dec
-    out.puts("}")
-  }
-
   override def attrProcess(proc: ProcessExpr, varSrc: Identifier, varDest: Identifier, rep: RepeatSpec): Unit = {
     val srcExpr = getRawIdExpr(varSrc, rep)
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/JavaCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/JavaCompiler.scala
index ee19058d3..54d00e658 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/JavaCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/JavaCompiler.scala
@@ -18,7 +18,6 @@ class JavaCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     with UniversalFooter
     with UniversalDoc
     with AllocateIOLocalVar
-    with FixedContentsUsingArrayByteLiteral
     with SwitchIfOps
     with NoNeedForFullClassPath {
   import JavaCompiler._
@@ -233,10 +232,6 @@ class JavaCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.puts("}")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit = {
-    out.puts(s"${privateMemberName(attrName)} = $normalIO.ensureFixedContents($contents);")
-  }
-
   override def attrProcess(proc: ProcessExpr, varSrc: Identifier, varDest: Identifier, rep: RepeatSpec): Unit = {
     val srcExpr = getRawIdExpr(varSrc, rep)
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/JavaScriptCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/JavaScriptCompiler.scala
index a039b4560..d4c09fe9d 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/JavaScriptCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/JavaScriptCompiler.scala
@@ -17,8 +17,7 @@ class JavaScriptCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     with UniversalDoc
     with AllocateIOLocalVar
     with EveryReadIsExpression
-    with SwitchIfOps
-    with FixedContentsUsingArrayByteLiteral {
+    with SwitchIfOps {
   import JavaScriptCompiler._
 
   override val translator = new JavaScriptTranslator(typeProvider, importList)
@@ -189,11 +188,6 @@ class JavaScriptCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.puts("}")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit = {
-    out.puts(s"${privateMemberName(attrName)} = " +
-      s"$normalIO.ensureFixedContents($contents);")
-  }
-
   override def attrProcess(proc: ProcessExpr, varSrc: Identifier, varDest: Identifier, rep: RepeatSpec): Unit = {
     val srcExpr = getRawIdExpr(varSrc, rep)
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/LuaCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/LuaCompiler.scala
index 1f24674e9..bae51b755 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/LuaCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/LuaCompiler.scala
@@ -12,7 +12,6 @@ class LuaCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
   extends LanguageCompiler(typeProvider, config)
     with AllocateIOLocalVar
     with EveryReadIsExpression
-    with FixedContentsUsingArrayByteLiteral
     with ObjectOrientedLanguage
     with SingleOutputFile
     with UniversalDoc
@@ -154,9 +153,6 @@ class LuaCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.puts("end")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit =
-    out.puts(s"${privateMemberName(attrName)} = self._io:ensure_fixed_contents($contents)")
-
   override def condIfHeader(expr: Ast.expr): Unit = {
     out.puts(s"if ${expression(expr)} then")
     out.inc
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/NimCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/NimCompiler.scala
index 21868c146..fb0902073 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/NimCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/NimCompiler.scala
@@ -13,7 +13,6 @@ class NimCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     with SingleOutputFile
     with EveryReadIsExpression
     with UpperCamelCaseClasses
-    with FixedContentsUsingArrayByteLiteral
     with UniversalFooter
     with AllocateIOLocalVar
     with SwitchIfOps
@@ -83,10 +82,6 @@ class NimCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
 
   // Members declared in io.kaitai.struct.languages.components.LanguageCompiler
   override def alignToByte(io: String): Unit = out.puts(s"alignToByte($io)")
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit = {
-    out.puts(s"this.${idToStr(attrName)} = $normalIO.ensureFixedContents($contents)")
-  }
-  // def attrParse(attr: AttrLikeSpec, id: Identifier, defEndian: Option[Endianness]): Unit = ???
   override def attrParseHybrid(leProc: () => Unit, beProc: () => Unit): Unit = {
     out.puts("if this.isLe:")
     out.inc
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/PHPCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/PHPCompiler.scala
index c2c4d1476..849bda236 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/PHPCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/PHPCompiler.scala
@@ -16,7 +16,6 @@ class PHPCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     with AllocateIOLocalVar
     with UniversalFooter
     with UniversalDoc
-    with FixedContentsUsingArrayByteLiteral
     with EveryReadIsExpression {
 
   import PHPCompiler._
@@ -203,9 +202,6 @@ class PHPCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.puts("}")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit =
-    out.puts(s"${privateMemberName(attrName)} = $normalIO->ensureFixedContents($contents);")
-
   override def attrProcess(proc: ProcessExpr, varSrc: Identifier, varDest: Identifier, rep: RepeatSpec): Unit = {
     val srcExpr = getRawIdExpr(varSrc, rep)
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/PerlCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/PerlCompiler.scala
index c8bfe5b0c..51e0bfddd 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/PerlCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/PerlCompiler.scala
@@ -16,7 +16,6 @@ class PerlCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     with UniversalFooter
     with UpperCamelCaseClasses
     with AllocateIOLocalVar
-    with FixedContentsUsingArrayByteLiteral
     with SwitchIfOps
     with EveryReadIsExpression {
 
@@ -170,10 +169,6 @@ class PerlCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.puts("}")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit = {
-    out.puts(s"${privateMemberName(attrName)} = $normalIO->ensure_fixed_contents($contents);")
-  }
-
   override def attrProcess(proc: ProcessExpr, varSrc: Identifier, varDest: Identifier, rep: RepeatSpec): Unit = {
     val srcExpr = getRawIdExpr(varSrc, rep)
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/PythonCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/PythonCompiler.scala
index 37a75f323..1433aaee0 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/PythonCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/PythonCompiler.scala
@@ -17,7 +17,6 @@ class PythonCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     with UniversalFooter
     with EveryReadIsExpression
     with AllocateIOLocalVar
-    with FixedContentsUsingArrayByteLiteral
     with UniversalDoc
     with SwitchIfOps
     with NoNeedForFullClassPath {
@@ -175,9 +174,6 @@ class PythonCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.putsLines("", "\"\"\"" + docStr + refStr + "\"\"\"")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit =
-    out.puts(s"${privateMemberName(attrName)} = self._io.ensure_fixed_contents($contents)")
-
   override def attrParseHybrid(leProc: () => Unit, beProc: () => Unit): Unit = {
     out.puts("if self._is_le:")
     out.inc
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/RubyCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/RubyCompiler.scala
index ccda2646e..f127bf38c 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/RubyCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/RubyCompiler.scala
@@ -18,7 +18,6 @@ class RubyCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     with UpperCamelCaseClasses
     with AllocateIOLocalVar
     with EveryReadIsExpression
-    with FixedContentsUsingArrayByteLiteral
     with NoNeedForFullClassPath {
 
   import RubyCompiler._
@@ -202,9 +201,6 @@ class RubyCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     out.puts("end")
   }
 
-  override def attrFixedContentsParse(attrName: Identifier, contents: String): Unit =
-    out.puts(s"${privateMemberName(attrName)} = $normalIO.ensure_fixed_contents($contents)")
-
   override def attrProcess(proc: ProcessExpr, varSrc: Identifier, varDest: Identifier, rep: RepeatSpec): Unit = {
     val srcExpr = getRawIdExpr(varSrc, rep)
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/RustCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/RustCompiler.scala
index b0e885e7b..29d667d10 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/RustCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/RustCompiler.scala
@@ -16,7 +16,6 @@ class RustCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
   extends LanguageCompiler(typeProvider, config)
     with AllocateIOLocalVar
     with EveryReadIsExpression
-    with FixedContentsUsingArrayByteLiteral
     with ObjectOrientedLanguage
     with SingleOutputFile
     with UpperCamelCaseClasses
@@ -846,10 +845,6 @@ class RustCompiler(typeProvider: ClassTypeProvider, config: RuntimeConfig)
     expr2
   }
 
-  override def attrFixedContentsParse(attrName: Identifier,
-                                      contents: String): Unit =
-    out.puts(s"// attrFixedContentsParse($attrName, $contents)")
-
   override def publicMemberName(id: Identifier): String =
     s"// publicMemberName($id)"
 
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/components/FixedContentsUsingArrayByteLiteral.scala b/shared/src/main/scala/io/kaitai/struct/languages/components/FixedContentsUsingArrayByteLiteral.scala
deleted file mode 100644
index c5d4abd9b..000000000
--- a/shared/src/main/scala/io/kaitai/struct/languages/components/FixedContentsUsingArrayByteLiteral.scala
+++ /dev/null
@@ -1,21 +0,0 @@
-package io.kaitai.struct.languages.components
-
-import io.kaitai.struct.exprlang.Ast
-import io.kaitai.struct.format.Identifier
-
-/**
-  * Allows uniform implementation of attrFixedContentsParse by enforcing usage
-  * of doByteArrayLiteral in relevant language's translator.
-  */
-trait FixedContentsUsingArrayByteLiteral extends LanguageCompiler {
-  def attrFixedContentsParse(attrName: Identifier, contents: Array[Byte]) =
-    attrFixedContentsParse(
-      attrName,
-      translator.translate(
-        Ast.expr.List(
-          contents.map(x => Ast.expr.IntNum(BigInt(x & 0xff)))
-        )
-      )
-    )
-  def attrFixedContentsParse(attrName: Identifier, contents: String): Unit
-}
diff --git a/shared/src/main/scala/io/kaitai/struct/languages/components/LanguageCompiler.scala b/shared/src/main/scala/io/kaitai/struct/languages/components/LanguageCompiler.scala
index 9beb9f707..4877b5db9 100644
--- a/shared/src/main/scala/io/kaitai/struct/languages/components/LanguageCompiler.scala
+++ b/shared/src/main/scala/io/kaitai/struct/languages/components/LanguageCompiler.scala
@@ -123,9 +123,6 @@ abstract class LanguageCompiler(
   def attrInit(attr: AttrLikeSpec): Unit = {}
   def attrDestructor(attr: AttrLikeSpec, id: Identifier): Unit = {}
 
-  // TODO: delete
-  def attrFixedContentsParse(attrName: Identifier, contents: Array[Byte]): Unit
-
   def condIfSetNull(instName: Identifier): Unit = {}
   def condIfSetNonNull(instName: Identifier): Unit = {}
   def condIfHeader(expr: Ast.expr): Unit