fix migration for preferences controller tokens

1 files changed, 1 insertions, 1 deletions

diff --git a/app/scripts/migrations/028.js b/app/scripts/migrations/028.js
index e36884a9c..cbda48584 100644
--- a/app/scripts/migrations/028.js
+++ b/app/scripts/migrations/028.js
@@ -29,7 +29,7 @@ function transformState (state) {
       const tokens = newState.TransactionController.tokens
       const selectedAddress = newState.PreferencesController.selectedAddress
       newState.PreferencesController.tokens = []
-      newState.PreferencesController.accountTokens = {selectedAddress: {'mainnet': tokens}}
+      newState.PreferencesController.accountTokens = {[selectedAddress]: {'mainnet': tokens}}
     }
   }