diff --git a/include/bitsery/serializer.h b/include/bitsery/serializer.h
index d223bf1..67b2a45 100644
--- a/include/bitsery/serializer.h
+++ b/include/bitsery/serializer.h
@@ -432,7 +432,7 @@ namespace bitsery {
 
     template <typename T>
     size_t quickMeasureSize(const T& value) {
-        BasicSerializer<MeasureSize> ser {nullptr};
+        BasicSerializer<MeasureSize> ser{MeasureSize{}};
         ser.object(value);
         auto& w = AdapterAccess::getWriter(ser);
         w.flush();