diff --git a/src/com/android/settings/development/ClearAdbKeysPreferenceController.java b/src/com/android/settings/development/ClearAdbKeysPreferenceController.java
index b39d874..69e6c69 100644
--- a/src/com/android/settings/development/ClearAdbKeysPreferenceController.java
+++ b/src/com/android/settings/development/ClearAdbKeysPreferenceController.java
@@ -52,6 +52,9 @@
 
     @Override
     public boolean isAvailable() {
+        // If the build is insecure (any -user build, 'ro.adb.secure=0'), adbd does not
+        // requests/store authorizations. There is no need for a "revoke authorizations"
+        // button.
         return AdbProperties.secure().orElse(false);
     }