diff --git a/lldb/source/Commands/CommandObjectCommands.cpp b/lldb/source/Commands/CommandObjectCommands.cpp
--- a/lldb/source/Commands/CommandObjectCommands.cpp
+++ b/lldb/source/Commands/CommandObjectCommands.cpp
@@ -1480,7 +1480,7 @@
     std::string m_class_name;
     std::string m_funct_name;
     std::string m_short_help;
-    LazyBool m_overwrite_lazy;
+    LazyBool m_overwrite_lazy = eLazyBoolCalculate;
     ScriptedCommandSynchronicity m_synchronicity =
         eScriptedCommandSynchronicitySynchronous;
   };
@@ -1647,7 +1647,7 @@
   std::string m_cmd_name;
   CommandObjectMultiword *m_container = nullptr;
   std::string m_short_help;
-  bool m_overwrite = eLazyBoolCalculate;
+  bool m_overwrite = false;
   ScriptedCommandSynchronicity m_synchronicity =
       eScriptedCommandSynchronicitySynchronous;
 };