diff --git a/Function.hpp b/Function.hpp
index 9d5508f..f062472 100644
--- a/Function.hpp
+++ b/Function.hpp
@@ -3,7 +3,7 @@ class Function;
 
 
 template <typename Ret, typename... Args>
-class Function
+class Function<Ret(Args...)>
 {
 private:
     class callable_base