diff --git a/runtime/builtins.cpp b/runtime/builtins.cpp
index d1fb07ea724fafd95ca067ecf815c5d863976c8e..75756ec40678ef5d510ca2652ac2cfef7ab24fc8 100644
--- a/runtime/builtins.cpp
+++ b/runtime/builtins.cpp
@@ -239,7 +239,7 @@ void Builtins::Initialize(const JSHandle<GlobalEnv> &env, JSThread *thread)
     thread_->ResetGuardians();
 
 #ifdef FUZZING_FUZZILLI_BUILTIN
-    InitializeFuzzilli(env, obj_func_dynclass);
+    InitializeFuzzilli(env, objFuncDynclass);
 #endif
 }