diff --git a/src/corelib/io/qdebug.cpp b/src/corelib/io/qdebug.cpp
index 64b693fea5..70832c3dbc 100644
--- a/src/corelib/io/qdebug.cpp
+++ b/src/corelib/io/qdebug.cpp
@@ -996,7 +996,7 @@ QDebug &QDebug::resetFormat()
 */
 
 /*!
-    \fn template <class T> QString QDebug::toString(T &&object)
+    \fn template <class T> QString QDebug::toString(const T &object)
     \since 6.0
 
     \include qdebug-toString.qdocinc
diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index 44c3dea804..6d48c7853d 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -224,11 +224,11 @@ public:
 #endif // QT_SUPPORTS_INT128
 
     template <typename T>
-    static QString toString(T &&object)
+    static QString toString(const T &object)
     {
         QString buffer;
         QDebug stream(&buffer);
-        stream.nospace() << std::forward<T>(object);
+        stream.nospace() << object;
         return buffer;
     }
 };