--- nono/debugger/debugger_m680x0.h	2026/04/29 17:05:24	1.1.1.8
+++ nono/debugger/debugger_m680x0.h	2026/04/29 17:05:28	1.1.1.9
@@ -18,7 +18,7 @@ class DebuggerMD_m680x0 : public Debugge
 {
 	using inherited = DebuggerMD;
  public:
-	DebuggerMD_m680x0(Debugger *parent);
+	explicit DebuggerMD_m680x0(Debugger *parent);
 	~DebuggerMD_m680x0() override;
 
 	CPUState GetCPUState() const override { return (CPUState)cpu->GetState(); }