diff --git a/disk/part.c b/disk/part.c
index 9266a09..9e457a6 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -400,7 +400,7 @@ int blk_get_device_by_str(const char *ifname, const char *dev_hwpart_str,
 
 	*dev_desc = get_dev_hwpart(ifname, dev, hwpart);
 	if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) {
-		printf("** Bad device %s %s **\n", ifname, dev_hwpart_str);
+		debug("** Bad device %s %s **\n", ifname, dev_hwpart_str);
 		dev = -ENOENT;
 		goto cleanup;
 	}