diff --git a/src/plugins/debugger/debuggerstartparameters.h b/src/plugins/debugger/debuggerstartparameters.h
index fafeabc56d5..33a73e863b8 100644
--- a/src/plugins/debugger/debuggerstartparameters.h
+++ b/src/plugins/debugger/debuggerstartparameters.h
@@ -74,7 +74,7 @@ public:
 
     // Used by Qml debugging.
     QString qmlServerAddress;
-    quint16 qmlServerPort = InvalidPort;
+    int qmlServerPort = InvalidPort;
 
     // Used by general remote debugging.
     QString remoteChannel;