diff --git a/src/com/android/phone/EmergencyCallbackModeExitDialog.java b/src/com/android/phone/EmergencyCallbackModeExitDialog.java
index 1210627..591f435 100644
--- a/src/com/android/phone/EmergencyCallbackModeExitDialog.java
+++ b/src/com/android/phone/EmergencyCallbackModeExitDialog.java
@@ -190,7 +190,7 @@
      * Shows Emergency Callback Mode dialog and starts countdown timer
      */
     private void showEmergencyCallbackModeExitDialog() {
-        if (!mIsResumed) {
+        if (isDestroyed()) {
             Log.w(TAG, "Tried to show dialog, but activity was already finished");
             return;
         }