1 files changed, 3 insertions, 1 deletions
diff --git a/libvo/vo_null.c b/libvo/vo_null.c
index bed16211d4..4214bec55d 100644
--- a/libvo/vo_null.c
+++ b/libvo/vo_null.c
@@ -26,6 +26,8 @@
 #include <string.h>
 #include <errno.h>
 #include "config.h"
+#include "mp_msg.h"
+#include "help_mp.h"
 #include "video_out.h"
 #include "video_out_internal.h"
 
@@ -91,7 +93,7 @@ static int preinit(const char *arg)
 {
     if(arg) 
     {
-	printf("vo_null: Unknown subdevice: %s\n",arg);
+	mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_NULL_UnknownSubdevice,arg);
 	return ENOSYS;
     }
     return 0;