diff --git a/src/com/android/ons/ONSProfileSelector.java b/src/com/android/ons/ONSProfileSelector.java
index ecb69be..ba2c877 100644
--- a/src/com/android/ons/ONSProfileSelector.java
+++ b/src/com/android/ons/ONSProfileSelector.java
@@ -883,7 +883,10 @@
     }
 
     public int getPreferredDataSubscriptionId() {
-        return mSubscriptionManager.getPreferredDataSubscriptionId();
+        final int preferredDataSubId = mSubscriptionManager.getPreferredDataSubscriptionId();
+        return isOpportunisticSub(preferredDataSubId)
+            ? preferredDataSubId
+            : SubscriptionManager.DEFAULT_SUBSCRIPTION_ID;
     }
 
     /**