diff --git a/src/Type/YMap.js b/src/Type/YMap.js
index 4fe73e2e..9c162bfa 100644
--- a/src/Type/YMap.js
+++ b/src/Type/YMap.js
@@ -36,7 +36,7 @@ export default class YMap extends Type {
     return map
   }
   keys () {
-    return this._map.keys()
+    return Array.from(this._map.keys()).filter(x => !x._deleted)
   }
   delete (key) {
     this._transact((y) => {