--- nono/debugger/debugger_hd64180.h	2026/04/29 17:05:24	1.1.1.2
+++ nono/debugger/debugger_hd64180.h	2026/04/29 17:05:28	1.1.1.3
@@ -18,7 +18,7 @@ class DebuggerMD_hd64180 : public Debugg
 {
 	using inherited = DebuggerMD;
  public:
-	DebuggerMD_hd64180(Debugger *parent_);
+	explicit DebuggerMD_hd64180(Debugger *parent_);
 	~DebuggerMD_hd64180() override;
 
 	CPUState GetCPUState() const override;