diff --git a/src/corelib/tools/qarraydataops.h b/src/corelib/tools/qarraydataops.h
index 2162512883a..c6ab3b1c483 100644
--- a/src/corelib/tools/qarraydataops.h
+++ b/src/corelib/tools/qarraydataops.h
@@ -1267,8 +1267,8 @@ public:
 
     template<typename It>
     void copyAppend(It b, It e, QtPrivate::IfIsForwardIterator<It> = true,
-                    QtPrivate::IfIsNotSame<std::decay_t<It>, iterator> = true,
-                    QtPrivate::IfIsNotSame<std::decay_t<It>, const_iterator> = true)
+                    QtPrivate::IfIsNotConvertible<It, const T *> = true,
+                    QtPrivate::IfIsNotConvertible<It, const T *> = true)
     {
         Q_ASSERT(this->isMutable() || b == e);
         Q_ASSERT(!this->isShared() || b == e);
diff --git a/src/corelib/tools/qcontainertools_impl.h b/src/corelib/tools/qcontainertools_impl.h
index 0f9225e461c..f4dfecffcec 100644
--- a/src/corelib/tools/qcontainertools_impl.h
+++ b/src/corelib/tools/qcontainertools_impl.h
@@ -147,6 +147,9 @@ using IfAssociativeIteratorHasFirstAndSecond =
 template <typename T, typename U>
 using IfIsNotSame =
     typename std::enable_if<!std::is_same<T, U>::value, bool>::type;
+
+template<typename T, typename U>
+using IfIsNotConvertible = typename std::enable_if<!std::is_convertible<T, U>::value, bool>::type;
 } // namespace QtPrivate
 
 QT_END_NAMESPACE