diff --git a/src/concurrent/qtconcurrentcompilertest.h b/src/concurrent/qtconcurrentcompilertest.h
index 8292d5c5045..a5456f8d279 100644
--- a/src/concurrent/qtconcurrentcompilertest.h
+++ b/src/concurrent/qtconcurrentcompilertest.h
@@ -51,8 +51,8 @@ namespace QtPrivate {
     template <class T, typename = void>
     struct IsIterable : std::false_type {};
     template <class T>
-    struct IsIterable<T, std::void_t<decltype(std::begin(std::declval<T>())),
-        decltype(std::end(std::declval<T>()))>>
+    struct IsIterable<T, std::void_t<decltype(std::declval<T>().begin()),
+        decltype(std::declval<T>().end())>>
         : std::true_type
     { };
 
diff --git a/src/concurrent/qtconcurrentfunctionwrappers.h b/src/concurrent/qtconcurrentfunctionwrappers.h
index bb78ea99537..be954167598 100644
--- a/src/concurrent/qtconcurrentfunctionwrappers.h
+++ b/src/concurrent/qtconcurrentfunctionwrappers.h
@@ -77,7 +77,7 @@ struct Argument
 template <class Sequence>
 struct Argument<Sequence, typename std::enable_if<IsIterableValue<Sequence>>::type>
 {
-    using Type = std::decay_t<decltype(*std::begin(std::declval<Sequence>()))>;
+    using Type = std::decay_t<decltype(*std::declval<Sequence>().begin())>;
 };
 
 template <class Iterator>
diff --git a/tests/auto/concurrent/qtconcurrentmap/functions.h b/tests/auto/concurrent/qtconcurrentmap/functions.h
index e5090ef03e8..aeba7949774 100644
--- a/tests/auto/concurrent/qtconcurrentmap/functions.h
+++ b/tests/auto/concurrent/qtconcurrentmap/functions.h
@@ -159,8 +159,6 @@ public:
     const_iterator cend() const { return data.cend(); }
     iterator begin() { return data.begin(); }
     iterator end() { return data.end(); }
-    const_iterator begin() const { return data.cbegin(); }
-    const_iterator end() const { return data.cend(); }
     bool operator==(const MoveOnlyVector &other) const { return data == other.data; }
 
 private: