diff --git a/disk/part.c b/disk/part.c
index 3039f5f..6a1c02d 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -350,7 +350,7 @@
 	if (*ep) {
 		printf("** Bad device specification %s %s **\n",
 		       ifname, dev_str);
-		dev = -1;
+		dev = -EINVAL;
 		goto cleanup;
 	}
 
@@ -359,7 +359,7 @@
 		if (*ep) {
 			printf("** Bad HW partition specification %s %s **\n",
 			    ifname, hwpart_str);
-			dev = -1;
+			dev = -EINVAL;
 			goto cleanup;
 		}
 	}
@@ -367,7 +367,7 @@
 	*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);
-		dev = -1;
+		dev = -ENOENT;
 		goto cleanup;
 	}