diff --git a/lib/stack_master/sparkle_formation/compile_time/empty_validator.rb b/lib/stack_master/sparkle_formation/compile_time/empty_validator.rb
index a8c85721..2dabf609 100644
--- a/lib/stack_master/sparkle_formation/compile_time/empty_validator.rb
+++ b/lib/stack_master/sparkle_formation/compile_time/empty_validator.rb
@@ -23,7 +23,7 @@ def has_invalid_values?
         end
 
         def create_error
-          "#{@name} cannot contain empty parameters:#{@parameter.inspect}"
+          "#{@name} is not present inside the 'compile_time_parameters' entry, or has an empty value; found: #{@parameter.inspect}"
         end
 
       end
diff --git a/spec/stack_master/sparkle_formation/compile_time/empty_validator_spec.rb b/spec/stack_master/sparkle_formation/compile_time/empty_validator_spec.rb
index 453b4bf3..62c7a3b4 100644
--- a/spec/stack_master/sparkle_formation/compile_time/empty_validator_spec.rb
+++ b/spec/stack_master/sparkle_formation/compile_time/empty_validator_spec.rb
@@ -2,7 +2,7 @@
 
   describe '#validate' do
     let(:name) { 'name' }
-    let(:error_message) { -> (error, _definition) { "#{name} cannot contain empty parameters:#{error.inspect}" } }
+    let(:error_message) { -> (error, _definition) { "#{name} is not present inside the 'compile_time_parameters' entry, or has an empty value; found: #{error.inspect}" } }
 
     context 'string validation' do
       let(:definition) { {type: :string} }