1 files changed, 1 insertions, 1 deletions
diff --git a/src/corelib/io/qlockfile_win.cpp b/src/corelib/io/qlockfile_win.cpp
index 261363f320..ba4a091965 100644
--- a/src/corelib/io/qlockfile_win.cpp
+++ b/src/corelib/io/qlockfile_win.cpp
@@ -100,7 +100,7 @@ QLockFile::LockError QLockFilePrivate::tryLock_sys()
                 ? QLockFile::LockFailedError
                 : QLockFile::PermissionError;
         default:
-            qWarning() << "Got unexpected locking error" << lastError;
+            qWarning("Got unexpected locking error %llu", quint64(lastError));
             return QLockFile::UnknownError;
         }
     }