diff --git a/dom/system/gonk/ril_worker.js b/dom/system/gonk/ril_worker.js
index f519e20e83c5..8486188c745b 100644
--- a/dom/system/gonk/ril_worker.js
+++ b/dom/system/gonk/ril_worker.js
@@ -13936,8 +13936,8 @@ ICCUtilsHelperObject.prototype = {
       }
     } else {
       // GSM family display rule.
-      let operatorMnc = RIL.operator.mnc;
-      let operatorMcc = RIL.operator.mcc;
+      let operatorMnc = RIL.operator ? RIL.operator.mnc : -1;
+      let operatorMcc = RIL.operator ? RIL.operator.mcc : -1;
 
       // First detect if we are on HPLMN or one of the PLMN
       // specified by the SIM card.