diff --git a/xsdgen/example_test.go b/xsdgen/example_test.go
index 3e3e004..c671f1b 100644
--- a/xsdgen/example_test.go
+++ b/xsdgen/example_test.go
@@ -135,7 +135,7 @@ func ExamplePackageName() {
 	//
 	// package postal
 	//
-	// // May be no more than 10 items long
+	// // Must be equal 10 items long
 	// type Zipcode string
 }
 
diff --git a/xsdgen/xsdgen.go b/xsdgen/xsdgen.go
index 0604c4d..011fa92 100644
--- a/xsdgen/xsdgen.go
+++ b/xsdgen/xsdgen.go
@@ -359,11 +359,11 @@ func (cfg *Config) expandComplexTypes(types []xsd.Type) []xsd.Type {
 // type that the user wants included in the Go source. In affect, what we
 // want to do is take the linked list:
 //
-// 	t1 -> t2 -> t3 -> builtin
+//	t1 -> t2 -> t3 -> builtin
 //
 // And produce a set of tuples:
 //
-// 	t1 -> builtin, t2 -> builtin, t3 -> builtin
+//	t1 -> builtin, t2 -> builtin, t3 -> builtin
 //
 // This is a heuristic that tends to generate better-looking Go code.
 func (cfg *Config) flatten(types map[xml.Name]xsd.Type) []xsd.Type {
@@ -463,6 +463,10 @@ func (cfg *Config) flatten1(t xsd.Type, push func(xsd.Type), depth int) xsd.Type
 			t.Doc = "Must be at least " + strconv.Itoa(t.Restriction.MinLength) + " items long"
 			return t
 		}
+		if t.Restriction.Length != 0 {
+			t.Doc = "Must be equal " + strconv.Itoa(t.Restriction.Length) + " items long"
+			return t
+		}
 		return t.Base
 	case *xsd.ComplexType:
 		// We can "unpack" a struct if it is extending a simple