diff --git a/index.d.ts b/index.d.ts
index 78312310..91674053 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -268,7 +268,7 @@ declare module "react-native-firebase" {
         /**
          * Returns a new firebase reference instance
          * */
-        ref(path: string): RnReference
+        ref(path?: string): RnReference
         /**
          * register listener 
          */