diff --git a/lib/modules/firestore/Path.js b/lib/modules/firestore/Path.js
index 460c2763..c7fa414f 100644
--- a/lib/modules/firestore/Path.js
+++ b/lib/modules/firestore/Path.js
@@ -34,7 +34,7 @@ export default class Path {
   }
 
   parent(): Path | null {
-    return this._parts.length
+    return this._parts.length > 1
       ? new Path(this._parts.slice(0, this._parts.length - 1))
       : null;
   }