diff --git a/app/scripts/controllers/detect-tokens.js b/app/scripts/controllers/detect-tokens.js
index e6940c613..f0ceab8e6 100644
--- a/app/scripts/controllers/detect-tokens.js
+++ b/app/scripts/controllers/detect-tokens.js
@@ -47,7 +47,7 @@ class DetectTokensController {
       }
       tokensToDetect.forEach((tokenAddress, index) => {
         const balance = result[index]
-        if (!balance.isZero()) {
+        if (balance && !balance.isZero()) {
           this._preferences.addToken(tokenAddress, contracts[tokenAddress].symbol, contracts[tokenAddress].decimals)
         }
       })