diff --git a/src/plugins/debugger/gdb/termgdbadapter.cpp b/src/plugins/debugger/gdb/termgdbadapter.cpp
index 359f26f831d..e1ace5fca83 100644
--- a/src/plugins/debugger/gdb/termgdbadapter.cpp
+++ b/src/plugins/debugger/gdb/termgdbadapter.cpp
@@ -186,6 +186,7 @@ void GdbTermEngine::interruptInferior2()
 void GdbTermEngine::stubError(const QString &msg)
 {
     Core::AsynchronousMessageBox::critical(tr("Debugger Error"), msg);
+    notifyEngineIll();
 }
 
 void GdbTermEngine::stubExited()