diff --git a/packages/SystemUI/src/com/android/systemui/settings/UserTrackerImpl.kt b/packages/SystemUI/src/com/android/systemui/settings/UserTrackerImpl.kt
index 0b2ae05b7c9be..7cbc32f062c2d 100644
--- a/packages/SystemUI/src/com/android/systemui/settings/UserTrackerImpl.kt
+++ b/packages/SystemUI/src/com/android/systemui/settings/UserTrackerImpl.kt
@@ -103,7 +103,7 @@ open class UserTrackerImpl internal constructor(
     @GuardedBy("callbacks")
     private val callbacks: MutableList<DataItem> = ArrayList()
 
-    fun initialize(startingUser: Int) {
+    open fun initialize(startingUser: Int) {
         if (initialized) {
             return
         }