diff --git a/runtime/builtins.cpp b/runtime/builtins.cpp
index a26b6b6e643f722b6e7d44c8f35cbd680c68c188..35cf7ec61c9a3fd703897e30a676e2118ea18860 100644
--- a/runtime/builtins.cpp
+++ b/runtime/builtins.cpp
@@ -334,7 +334,7 @@ void Builtins::Initialize(const JSHandle<GlobalEnv> &env, JSThread *thread)
     thread_->ResetGuardians();
 
 #ifdef FUZZING_FUZZILLI_BUILTIN
-    InitializeFuzzilli(env, objFuncDynclass);
+    InitializeFuzzilli(env, obj_func_dynclass);
 #endif
 }