diff --git a/src/corelib/tools/qringbuffer.cpp b/src/corelib/tools/qringbuffer.cpp
index f59dcc39c4d..f32673b9bd7 100644
--- a/src/corelib/tools/qringbuffer.cpp
+++ b/src/corelib/tools/qringbuffer.cpp
@@ -62,7 +62,7 @@ void QRingChunk::detach()
     tailOffset = chunkSize;
 }
 
-QByteArray QRingChunk::toByteArray()
+QByteArray QRingChunk::toByteArray() &&
 {
     if (headOffset != 0 || tailOffset != chunk.size()) {
         if (isShared())
@@ -79,7 +79,7 @@ QByteArray QRingChunk::toByteArray()
         chunk.resize(tailOffset);
     }
 
-    return chunk;
+    return std::move(chunk);
 }
 
 /*!
diff --git a/src/corelib/tools/qringbuffer_p.h b/src/corelib/tools/qringbuffer_p.h
index d01c31b8617..1ab0053d1ac 100644
--- a/src/corelib/tools/qringbuffer_p.h
+++ b/src/corelib/tools/qringbuffer_p.h
@@ -114,7 +114,7 @@ public:
         return !chunk.isDetached();
     }
     Q_CORE_EXPORT void detach();
-    QByteArray toByteArray();
+    QByteArray toByteArray() &&;
 
     // getters
     inline qsizetype head() const