diff --git a/extendedcommands.h b/extendedcommands.h
index e9d7cc4..9297f83 100644
--- a/extendedcommands.h
+++ b/extendedcommands.h
@@ -37,8 +37,7 @@
 void
 show_advanced_menu();
 
-int
-format_unknown_device(const char* root);
+int format_unknown_device(const char *device, const char* path, const char *fs_type);
 
 void
 wipe_battery_stats();