diff --git a/libs/util/include/psemek/util/function.hpp b/libs/util/include/psemek/util/function.hpp
index f9cbea95..c96a8a62 100644
--- a/libs/util/include/psemek/util/function.hpp
+++ b/libs/util/include/psemek/util/function.hpp
@@ -74,8 +74,7 @@ namespace psemek::util
 			return static_cast<bool>(vtable_);
 		}
 
-		template <typename ... Args1>
-		R operator()(Args1 && ... args) const;
+		R operator()(Args ... args) const;
 
 		void reset();
 
@@ -168,13 +167,12 @@ namespace psemek::util
 	}
 
 	template <typename R, typename ... Args>
-	template <typename ... Args1>
-	R function<R(Args...)>::operator()(Args1 && ... args) const
+	R function<R(Args...)>::operator()(Args ... args) const
 	{
 		if (!vtable_)
 			throw empty_function_error{};
 
-		return vtable_->call(const_cast<void *>(static_cast<void const *>(&storage_)), std::forward<Args1>(args)...);
+		return vtable_->call(const_cast<void *>(static_cast<void const *>(&storage_)), std::forward<Args>(args)...);
 	}
 
 	template <typename R, typename ... Args>