diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/NamespaceCodegen.java b/compiler/backend/src/org/jetbrains/jet/codegen/NamespaceCodegen.java
index 5b84e5a99ca..c5dfe41f1e7 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/NamespaceCodegen.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/NamespaceCodegen.java
@@ -300,6 +300,7 @@ public class NamespaceCodegen extends GenerationStateAware {
             substringTo = name.length();
         }
 
-        return namespaceInternalName + "$src$" + name.substring(substringFrom, substringTo);
+        // dollar sign in the end is to prevent synthetic class from having "Test" or other parseable suffix
+        return namespaceInternalName + "$src$" + name.substring(substringFrom, substringTo) + "$";
     }
 }