diff -r c4993f0991e4 -r f4acc783f25e dav/sync.c
--- a/dav/sync.c	Sun Jul 02 10:37:44 2023 +0200
+++ b/dav/sync.c	Sun Jul 02 10:48:27 2023 +0200
@@ -469,9 +469,11 @@
 
     DavBool changed = 0;
     CxList *res_tags = sync_get_file_tags(dir, res, &changed, NULL);
+    if(!res_tags) {
+        res_tags = cxEmptyList;
+    }
     
     int ret = matches_tagfilter(res_tags, tagfilter);
-    CxIterator i = cxListIterator(res_tags);
     cxListDestroy(res_tags);
     return ret;
 }