diff --git a/src/qml/debugger/qqmldebugserver.cpp b/src/qml/debugger/qqmldebugserver.cpp
index 59ac548fa8165b7fcbf0af5aa76c97dd4635f653..2a2ce663bc971a13bd76ce618f09a96ea2a61534 100644
--- a/src/qml/debugger/qqmldebugserver.cpp
+++ b/src/qml/debugger/qqmldebugserver.cpp
@@ -419,6 +419,7 @@ QQmlDebugServer::QQmlDebugServer()
         }
     }
 #else
+    Q_UNUSED(&cleanup)
     if (!appD->qmljsDebugArgumentsString().isEmpty()) {
         qWarning() << QString(QLatin1String(
                      "QML Debugger: Ignoring \"-qmljsdebugger=%1\". "