diff --git a/extension/background/wallet.js b/extension/background/wallet.js
index cc2154a8a..047eb9970 100644
--- a/extension/background/wallet.js
+++ b/extension/background/wallet.js
@@ -386,7 +386,7 @@ class Wallet {
         Query(this.db)
             .iter("coins")
             .reduce(countNonEmpty, 0)
-            .then(doBadge);
+            .then(doBadge.bind(this));
     }
     storeCoin(coin) {
         Query(this.db)
diff --git a/extension/background/wallet.ts b/extension/background/wallet.ts
index 87e41e854..8b6094d74 100644
--- a/extension/background/wallet.ts
+++ b/extension/background/wallet.ts
@@ -588,7 +588,7 @@ class Wallet {
     Query(this.db)
       .iter("coins")
       .reduce(countNonEmpty, 0)
-      .then(doBadge);
+      .then(doBadge.bind(this));
   }
 
   storeCoin(coin: Db.Coin) {