diff --git a/src/sound/sound_driver.hpp b/src/sound/sound_driver.hpp
--- a/src/sound/sound_driver.hpp
+++ b/src/sound/sound_driver.hpp
@@ -26,6 +26,6 @@ public:
 	}
 };
 
-extern char *_ini_sounddriver;
+extern std::string _ini_sounddriver;
 
 #endif /* SOUND_SOUND_DRIVER_HPP */