diff --git a/lib/cmock_generator.rb b/lib/cmock_generator.rb
index 6fe191c..255fe71 100644
--- a/lib/cmock_generator.rb
+++ b/lib/cmock_generator.rb
@@ -183,8 +183,9 @@ class CMockGenerator
       file << "    UNITY_TEST_FAIL(cmock_line, \"Function '#{function[:name]}' called later than expected.\");\n"
       # file << "  UNITY_TEST_ASSERT((cmock_call_instance->CallOrder == ++GlobalVerifyOrder), cmock_line, \"Out of order function calls. Function '#{function[:name]}'\");\n"
     end
+    return_type = function[:return][:const?] ? "const #{function[:return][:type]}" : function[:return][:type]
     file << @plugins.run(:mock_implementation, function)
-    file << "  return cmock_call_instance->ReturnVal;\n" unless (function[:return][:void?])
+    file << "  return (#{return_type})cmock_call_instance->ReturnVal;\n" unless (function[:return][:void?])
     file << "}\n\n"
   end
 
diff --git a/lib/cmock_generator_plugin_ignore.rb b/lib/cmock_generator_plugin_ignore.rb
index 807afd6..4118e5e 100644
--- a/lib/cmock_generator_plugin_ignore.rb
+++ b/lib/cmock_generator_plugin_ignore.rb
@@ -39,9 +39,10 @@ class CMockGeneratorPluginIgnore
       lines << "    return;\n  }\n"
     else
       retval = function[:return].merge( { :name => "cmock_call_instance->ReturnVal"} )
-      lines << "    if (cmock_call_instance == NULL)\n      return Mock.#{function[:name]}_FinalReturn;\n"
+      return_type = function[:return][:const?] ? "const #{function[:return][:type]}" : function[:return][:type]
+      lines << "    if (cmock_call_instance == NULL)\n      return (#{return_type})Mock.#{function[:name]}_FinalReturn;\n"
       lines << "  " + @utils.code_assign_argument_quickly("Mock.#{function[:name]}_FinalReturn", retval) unless (retval[:void?])
-      lines << "    return cmock_call_instance->ReturnVal;\n  }\n"
+      lines << "    return (#{return_type})cmock_call_instance->ReturnVal;\n  }\n"
     end
     lines
   end