--- nono/host/comdriver_stdio.h	2026/04/29 17:05:18	1.1.1.2
+++ nono/host/comdriver_stdio.h	2026/04/29 17:05:30	1.1.1.3
@@ -17,7 +17,7 @@ class COMDriverStdio : public COMDriver
 {
 	using inherited = COMDriver;
  public:
-	COMDriverStdio(HostDevice *hostdev_);
+	explicit COMDriverStdio(HostDevice *hostdev_);
 	~COMDriverStdio() override;
 
 	bool InitDriver() override;