diff --git a/builtin-mv.c b/builtin-mv.c
index 8b81d4b51d..68f47384dc 100644
--- a/builtin-mv.c
+++ b/builtin-mv.c
@@ -24,14 +24,10 @@ static const char **copy_pathspec(const char *prefix, const char **pathspec,
 	result[count] = NULL;
 	for (i = 0; i < count; i++) {
 		int length = strlen(result[i]);
-		if (length > 0 && result[i][length - 1] == '/') {
+		if (length > 0 && is_dir_sep(result[i][length - 1]))
 			result[i] = xmemdupz(result[i], length - 1);
-		}
-		if (base_name) {
-			const char *last_slash = strrchr(result[i], '/');
-			if (last_slash)
-				result[i] = last_slash + 1;
-		}
+		if (base_name)
+			result[i] = basename((char *)result[i]);
 	}
 	return get_pathspec(prefix, result);
 }