diff --git a/editors/patch.c b/editors/patch.c
index c18659e..047de9e 100644
--- a/editors/patch.c
+++ b/editors/patch.c
@@ -87,7 +87,7 @@
 		char *p, *i;
 		ret = getopt32(argc, argv, "p:i:", &p, &i);
 		if (ret & 1)
-			patch_level = bb_xgetlarg(p, 10, -1, USHRT_MAX);
+			patch_level = xatol_range(p, -1, USHRT_MAX);
 		if (ret & 2) {
 			patch_file = xfopen(i, "r");
 		} else {