diff --git a/src/com/android/settings/wifi/details/WifiDetailPreferenceController.java b/src/com/android/settings/wifi/details/WifiDetailPreferenceController.java
index 955525dd859..22b9376152a 100644
--- a/src/com/android/settings/wifi/details/WifiDetailPreferenceController.java
+++ b/src/com/android/settings/wifi/details/WifiDetailPreferenceController.java
@@ -663,7 +663,8 @@ public class WifiDetailPreferenceController extends AbstractPreferenceController
         }
 
         // return randomized MAC address
-        if (mWifiConfig.macRandomizationSetting == WifiConfiguration.RANDOMIZATION_PERSISTENT) {
+        if (mWifiConfig != null &&
+                mWifiConfig.macRandomizationSetting == WifiConfiguration.RANDOMIZATION_PERSISTENT) {
             return mWifiConfig.getRandomizedMacAddress().toString();
         }