diff --git a/src/corelib/global/q20algorithm.h b/src/corelib/global/q20algorithm.h
index 69dc2d24463..f670a5dbeee 100644
--- a/src/corelib/global/q20algorithm.h
+++ b/src/corelib/global/q20algorithm.h
@@ -12,9 +12,9 @@
 //  W A R N I N G
 //  -------------
 //
-// This file is not part of the Qt API. Types and functions defined
-// in this file will behave exactly as their std counterparts. You
-// may use these definitions in your own code, but be aware that we
+// This file is not part of the Qt API. Types and functions defined in this
+// file can reliably be replaced by their std counterparts, once available.
+// You may use these definitions in your own code, but be aware that we
 // will remove them once Qt depends on the C++ version that supports
 // them in namespace std. There will be NO deprecation warning, the
 // definitions will JUST go away.
diff --git a/src/corelib/global/q20functional.h b/src/corelib/global/q20functional.h
index 95842526632..7ba10bd4b1b 100644
--- a/src/corelib/global/q20functional.h
+++ b/src/corelib/global/q20functional.h
@@ -11,9 +11,9 @@
 //  W A R N I N G
 //  -------------
 //
-// This file is not part of the Qt API. Types and functions defined
-// in this file will behave exactly as their std counterparts. You
-// may use these definitions in your own code, but be aware that we
+// This file is not part of the Qt API. Types and functions defined in this
+// file can reliably be replaced by their std counterparts, once available.
+// You may use these definitions in your own code, but be aware that we
 // will remove them once Qt depends on the C++ version that supports
 // them in namespace std. There will be NO deprecation warning, the
 // definitions will JUST go away.
diff --git a/src/corelib/global/q20iterator.h b/src/corelib/global/q20iterator.h
index a7f1cf3cfc1..23b6406b64c 100644
--- a/src/corelib/global/q20iterator.h
+++ b/src/corelib/global/q20iterator.h
@@ -11,9 +11,9 @@
 //  W A R N I N G
 //  -------------
 //
-// This file is not part of the Qt API. Types and functions defined
-// in this file will behave exactly as their std counterparts. You
-// may use these definitions in your own code, but be aware that we
+// This file is not part of the Qt API. Types and functions defined in this
+// file can reliably be replaced by their std counterparts, once available.
+// You may use these definitions in your own code, but be aware that we
 // will remove them once Qt depends on the C++ version that supports
 // them in namespace std. There will be NO deprecation warning, the
 // definitions will JUST go away.
diff --git a/src/corelib/global/q23functional.h b/src/corelib/global/q23functional.h
index 5f83df698e4..ae8f78a3d0b 100644
--- a/src/corelib/global/q23functional.h
+++ b/src/corelib/global/q23functional.h
@@ -10,9 +10,9 @@
 //  W A R N I N G
 //  -------------
 //
-// This file is not part of the Qt API. Types and functions defined
-// in this file will behave exactly as their std counterparts. You
-// may use these definitions in your own code, but be aware that we
+// This file is not part of the Qt API. Types and functions defined in this
+// file can reliably be replaced by their std counterparts, once available.
+// You may use these definitions in your own code, but be aware that we
 // will remove them once Qt depends on the C++ version that supports
 // them in namespace std. There will be NO deprecation warning, the
 // definitions will JUST go away.
diff --git a/src/corelib/global/qxpfunctional.h b/src/corelib/global/qxpfunctional.h
index 67350c56ed7..96570597535 100644
--- a/src/corelib/global/qxpfunctional.h
+++ b/src/corelib/global/qxpfunctional.h
@@ -9,9 +9,9 @@
 //  W A R N I N G
 //  -------------
 //
-// This file is not part of the Qt API. Types and functions defined
-// in this file will behave exactly as their std counterparts. You
-// may use these definitions in your own code, but be aware that we
+// This file is not part of the Qt API. Types and functions defined in this
+// file can reliably be replaced by their std counterparts, once available.
+// You may use these definitions in your own code, but be aware that we
 // will remove them once Qt depends on the C++ version that supports
 // them in namespace std. There will be NO deprecation warning, the
 // definitions will JUST go away.