diff --git a/src/plugins/debugger/debuggerplugin.cpp b/src/plugins/debugger/debuggerplugin.cpp
index 8a34798fb44..42fc00a867c 100644
--- a/src/plugins/debugger/debuggerplugin.cpp
+++ b/src/plugins/debugger/debuggerplugin.cpp
@@ -2370,6 +2370,7 @@ void DebuggerPluginPrivate::connectEngine(DebuggerEngine *engine)
 
     engine->watchHandler()->resetWatchers();
     m_localsView->hideProgressIndicator();
+    updateActiveLanguages();
 }
 
 static void changeFontSize(QWidget *widget, qreal size)