diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index 45e3e7efdcdf7..64b30d917200c 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -2371,6 +2371,10 @@ message MetricsEvent {
     // CATEGORY: SETTINGS
     NIGHT_DISPLAY_SETTINGS = 488;
 
+    // ACTION: Settings -> Storage -> Manage storage -> Click Storage Manager
+        //   SUBTYPE: false is off, true is on
+    ACTION_TOGGLE_STORAGE_MANAGER = 489;
+
     // ---- End N-MR1 Constants, all N-MR1 constants go above this line ----
     // Add new aosp constants above this line.
     // END OF AOSP CONSTANTS