diff --git a/quickstep/src/com/android/quickstep/views/TaskView.kt b/quickstep/src/com/android/quickstep/views/TaskView.kt
index 1490fd0..05b9d40 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.kt
+++ b/quickstep/src/com/android/quickstep/views/TaskView.kt
@@ -257,6 +257,9 @@
      */
     protected var modalness = 0f
         set(value) {
+            if (field == value) {
+                return
+            }
             field = value
             onModalnessUpdated(field)
         }