diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 69f96b3..66b15ef 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -517,7 +517,7 @@
 	fclose(out);
 
 	if (*tmpname) {
-		strcat(dirname, name ? name : conf_get_configname());
+		strcat(dirname, basename);
 		strcat(dirname, ".old");
 		rename(newname, dirname);
 		if (rename(tmpname, newname))