diff --git a/src/libs/qmldebug/qmldebugconnectionmanager.cpp b/src/libs/qmldebug/qmldebugconnectionmanager.cpp
index a13cb0f3ccc..2901e21d9d0 100644
--- a/src/libs/qmldebug/qmldebugconnectionmanager.cpp
+++ b/src/libs/qmldebug/qmldebugconnectionmanager.cpp
@@ -71,6 +71,11 @@ void QmlDebugConnectionManager::disconnectFromServer()
     stopConnectionTimer();
 }
 
+bool QmlDebugConnectionManager::isConnecting() const
+{
+    return m_connectionTimer.isActive();
+}
+
 static quint16 port16(const QUrl &url)
 {
     const int port32 = url.port();
diff --git a/src/libs/qmldebug/qmldebugconnectionmanager.h b/src/libs/qmldebug/qmldebugconnectionmanager.h
index b1b731c4bc6..2bab6b082c0 100644
--- a/src/libs/qmldebug/qmldebugconnectionmanager.h
+++ b/src/libs/qmldebug/qmldebugconnectionmanager.h
@@ -44,6 +44,7 @@ public:
     void connectToServer(const QUrl &server);
     void disconnectFromServer();
 
+    bool isConnecting() const;
     bool isConnected() const;
 
     void setRetryParams(int interval, int maxAttempts);
diff --git a/src/plugins/qmlprofiler/qmlprofilertool.cpp b/src/plugins/qmlprofiler/qmlprofilertool.cpp
index 5b44948d32e..dd8605a2d2c 100644
--- a/src/plugins/qmlprofiler/qmlprofilertool.cpp
+++ b/src/plugins/qmlprofiler/qmlprofilertool.cpp
@@ -316,6 +316,13 @@ void QmlProfilerTool::finalizeRunControl(QmlProfilerRunner *runWorker)
         d->m_toolBusy = false;
         updateRunActions();
         disconnect(d->m_stopAction, &QAction::triggered, runControl, &RunControl::initiateStop);
+
+        // If we're still trying to connect, stop now.
+        if (d->m_profilerConnections->isConnecting()) {
+            showNonmodalWarning(tr("The application finished before a connection could be "
+                                   "established. No data was loaded."));
+            d->m_profilerConnections->disconnectFromServer();
+        }
     };
 
     connect(runControl, &RunControl::stopped, this, handleStop);