diff --git a/app/migrator/remark.go b/app/migrator/remark.go
index 998c34f5..9718ca02 100644
--- a/app/migrator/remark.go
+++ b/app/migrator/remark.go
@@ -27,7 +27,7 @@ func (r *Remark) Export(w io.Writer, siteID string) error {
 
 	commentsCount := 0
 	for _, topic := range topics {
-		comments, err := r.DataStore.Find(store.Locator{SiteID: siteID, URL: topic}, "time")
+		comments, err := r.DataStore.Find(store.Locator{SiteID: siteID, URL: topic.URL}, "time")
 		if err != nil {
 			return err
 		}