diff --git a/commands/ls-id.go b/commands/ls-id.go
index b9866828..55548556 100644
--- a/commands/ls-id.go
+++ b/commands/ls-id.go
@@ -10,9 +10,17 @@ import (
 
 func runLsID(cmd *cobra.Command, args []string) error {
 
-	var backend *cache.RepoCache
+	backend, err := cache.NewRepoCache(repo)
+	if err != nil {
+		return err
+	}
+	defer backend.Close()
 
-	prefix := args[0]
+	var prefix string
+	prefix = ""
+	if len(args) != 0 {
+		prefix = args[0]
+	}
 
 	for _, id := range backend.AllBugsIds() {
 		if prefix == "" || strings.HasPrefix(id, prefix) {