diff --git a/data/function.h b/data/function.h
index bb26b05..21ccc5d 100644
--- a/data/function.h
+++ b/data/function.h
@@ -26,7 +26,7 @@ class __Function<discriminator, Ret(Args...)> final {
     __PREVENT_DESTRUCTION(__Function);
 
     // Instance
-    static __Function<discriminator, Ret(Args...)> *instance;
+    static __Function *instance;
 
     // Current Function
     typedef __FunctionInfo<Ret, Args...> *func_t;