diff --git a/src/useRooms.ts b/src/useRooms.ts
index 9a4ad0a..3e2e14e 100644
--- a/src/useRooms.ts
+++ b/src/useRooms.ts
@@ -62,6 +62,7 @@ export const useRooms = (orderByUpdatedAt?: boolean) => {
     const currentUser = await fetchUser(firebaseUser.uid)
 
     const roomUsers = [currentUser].concat(users)
+    metadata =  Object.assign({}, metadata);
 
     const room = await firestore()
       .collection(ROOMS_COLLECTION_NAME)
@@ -119,18 +120,19 @@ export const useRooms = (orderByUpdatedAt?: boolean) => {
     const currentUser = await fetchUser(firebaseUser.uid)
 
     const users = [currentUser].concat(otherUser)
+    metadata =  Object.assign({}, metadata);
 
     const room = await firestore()
       .collection(ROOMS_COLLECTION_NAME)
       .add({
         createdAt: firestore.FieldValue.serverTimestamp(),
-        imageUrl: undefined,
+        imageUrl: '',
         metadata,
-        name: undefined,
+        name: '',
         type: 'direct',
         updatedAt: firestore.FieldValue.serverTimestamp(),
         userIds: users.map((u) => u.id),
-        userRoles: undefined,
+        userRoles: '',
       })
 
     return {