diff --git a/src/dbus/qdbuspendingcall.cpp b/src/dbus/qdbuspendingcall.cpp
index ea847421d0..2278db4394 100644
--- a/src/dbus/qdbuspendingcall.cpp
+++ b/src/dbus/qdbuspendingcall.cpp
@@ -180,9 +180,12 @@ bool QDBusPendingCallPrivate::setReplyCallback(QObject *target, const char *memb
     if (metaTypes.at(count) == QDBusMetaTypeId::message)
         --count;
 
-    // QList<int> is actually a vector
-    // kids, don't try this at home
-    setMetaTypes(count, count ? &metaTypes.at(1) : 0);
+    if (count == 0) {
+        setMetaTypes(count, 0);
+    } else {
+        QVector<int> types = QVector<int>::fromList(metaTypes);
+        setMetaTypes(count, types.constData() + 1);
+    }
     return true;
 }