diff --git a/lldb/include/lldb/Target/ThreadPlan.h b/lldb/include/lldb/Target/ThreadPlan.h
--- a/lldb/include/lldb/Target/ThreadPlan.h
+++ b/lldb/include/lldb/Target/ThreadPlan.h
@@ -494,7 +494,7 @@
   // another thread plan is never either of the above.
   void PushPlan(lldb::ThreadPlanSP &thread_plan_sp) {
     GetThread().PushPlan(thread_plan_sp);
-    thread_plan_sp->SetPrivate(false);
+    thread_plan_sp->SetPrivate(true);
     thread_plan_sp->SetIsMasterPlan(false);
   }