diff --git a/include/ylt/struct_pack/reflection.hpp b/include/ylt/struct_pack/reflection.hpp
index fb61b2ced..ed48ca983 100644
--- a/include/ylt/struct_pack/reflection.hpp
+++ b/include/ylt/struct_pack/reflection.hpp
@@ -593,10 +593,10 @@ template <typename T, typename = void>
 template<typename T>
 constexpr decltype(auto) delay_sp_config_eval() {
   if constexpr (sizeof(T)==0) {
-    return (T*){};
+    return (T*)nullptr;
   }
   else {
-    return (sp_config*){};
+    return (sp_config*)nullptr;
   }
 }