diff --git a/src/plugins/platforms/vnc/qvncscreen.cpp b/src/plugins/platforms/vnc/qvncscreen.cpp
index 5dc3919ff5..4c55e0fd01 100644
--- a/src/plugins/platforms/vnc/qvncscreen.cpp
+++ b/src/plugins/platforms/vnc/qvncscreen.cpp
@@ -139,6 +139,9 @@ void QVncScreen::enableClientCursor(QVncClient *client)
 void QVncScreen::disableClientCursor(QVncClient *client)
 {
 #if QT_CONFIG(cursor)
+    if (!clientCursor)
+        return;
+
     uint clientCount = clientCursor->removeClient(client);
     if (clientCount == 0) {
         delete clientCursor;