2 files changed, 7 insertions, 3 deletions
diff --git a/src/corelib/serialization/qdatastream.cpp b/src/corelib/serialization/qdatastream.cpp
index 01808ebce6..cc4efc9be3 100644
--- a/src/corelib/serialization/qdatastream.cpp
+++ b/src/corelib/serialization/qdatastream.cpp
@@ -392,17 +392,18 @@ void QDataStream::setDevice(QIODevice *d)
     dev = d;
 }
 
+#if QT_DEPRECATED_SINCE(5, 13)
 /*!
     \obsolete
     Unsets the I/O device.
-    Use setDevice(0) instead.
+    Use setDevice(nullptr) instead.
 */
 
 void QDataStream::unsetDevice()
 {
-    setDevice(0);
+    setDevice(nullptr);
 }
-
+#endif
 
 /*!
     \fn bool QDataStream::atEnd() const
diff --git a/src/corelib/serialization/qdatastream.h b/src/corelib/serialization/qdatastream.h
index 2c874700e4..81134f74b0 100644
--- a/src/corelib/serialization/qdatastream.h
+++ b/src/corelib/serialization/qdatastream.h
@@ -131,7 +131,10 @@ public:
 
     QIODevice *device() const;
     void setDevice(QIODevice *);
+#if QT_DEPRECATED_SINCE(5, 13)
+    QT_DEPRECATED_X("Use QDataStream::setDevice(nullptr) instead")
     void unsetDevice();
+#endif
 
     bool atEnd() const;