diff --git a/storage/versioned/kv.go b/storage/versioned/kv.go
index 2b8b7ae2129d5a67fdf576297a4318e229c91ff8..cf0530d5f8bef0fcb6a173cbb43e9b78de9b7f72 100644
--- a/storage/versioned/kv.go
+++ b/storage/versioned/kv.go
@@ -164,3 +164,9 @@ func (v *KV) GetFullKey(key string, version uint64) string {
 func (v *KV) makeKey(key string, version uint64) string {
 	return fmt.Sprintf("%s%s_%d", v.prefix, key, version)
 }
+
+// Exists returns false if the error indicates the element doesn't
+// exist.
+func (v *KV) Exists(err Error) bool {
+	return ekv.Exists(err)
+}