diff --git a/cc/compiler.go b/cc/compiler.go
index a14f397..7e79dfa 100644
--- a/cc/compiler.go
+++ b/cc/compiler.go
@@ -115,7 +115,7 @@
 }
 
 func (compiler *baseCompiler) compilerProps() []interface{} {
-	return []interface{}{&compiler.Properties}
+	return []interface{}{&compiler.Properties, &compiler.Proto}
 }
 
 func (compiler *baseCompiler) compilerInit(ctx BaseModuleContext) {}