diff --git a/xdu.c b/xdu.c
index 747ce68..d11a04b 100644
--- a/xdu.c
+++ b/xdu.c
@@ -885,7 +885,7 @@ void savepsnode(FILE * fp, struct node *nodep, struct rect rect, int showsize)
         name = label;
         break;
     default:
-	name = NULL;
+        name = NULL;
         break;
     }