diff --git a/services/core/java/com/android/server/wm/DisplaySettings.java b/services/core/java/com/android/server/wm/DisplaySettings.java
index ba995f22b3b44..547d0fb1e31cd 100644
--- a/services/core/java/com/android/server/wm/DisplaySettings.java
+++ b/services/core/java/com/android/server/wm/DisplaySettings.java
@@ -78,17 +78,20 @@ public class DisplaySettings {
         }
     }
 
-    public void setOverscanLocked(String name, int left, int top, int right, int bottom) {
+    public void setOverscanLocked(String uniqueId, String name, int left, int top, int right,
+            int bottom) {
         if (left == 0 && top == 0 && right == 0 && bottom == 0) {
             // Right now all we are storing is overscan; if there is no overscan,
             // we have no need for the entry.
+            mEntries.remove(uniqueId);
+            // Legacy name might have been in used, so we need to clear it.
             mEntries.remove(name);
             return;
         }
-        Entry entry = mEntries.get(name);
+        Entry entry = mEntries.get(uniqueId);
         if (entry == null) {
-            entry = new Entry(name);
-            mEntries.put(name, entry);
+            entry = new Entry(uniqueId);
+            mEntries.put(uniqueId, entry);
         }
         entry.overscanLeft = left;
         entry.overscanTop = top;
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index a1b74fded3f6d..83ebfa4cb4013 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -8541,7 +8541,8 @@ public class WindowManagerService extends IWindowManager.Stub
             displayInfo.overscanBottom = bottom;
         }
 
-        mDisplaySettings.setOverscanLocked(displayInfo.uniqueId, left, top, right, bottom);
+        mDisplaySettings.setOverscanLocked(displayInfo.uniqueId, displayInfo.name, left, top,
+                right, bottom);
         mDisplaySettings.writeSettingsLocked();
 
         reconfigureDisplayLocked(displayContent);