diff --git a/src/com/android/settings/notification/NotificationPreferenceController.java b/src/com/android/settings/notification/NotificationPreferenceController.java
index 22f07be6d6b..3f535fb074f 100644
--- a/src/com/android/settings/notification/NotificationPreferenceController.java
+++ b/src/com/android/settings/notification/NotificationPreferenceController.java
@@ -111,6 +111,9 @@ public abstract class NotificationPreferenceController extends AbstractPreferenc
     }
 
     protected boolean isChannelConfigurable() {
+        if (mAppRow != null && mAppRow.lockedImportance) {
+            return false;
+        }
         if (mChannel != null && mAppRow != null) {
             return !Objects.equals(mChannel.getId(), mAppRow.lockedChannelId);
         }
diff --git a/tests/robotests/src/com/android/settings/notification/NotificationPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/notification/NotificationPreferenceControllerTest.java
index 1ad93780fa3..2368af5f94b 100644
--- a/tests/robotests/src/com/android/settings/notification/NotificationPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/notification/NotificationPreferenceControllerTest.java
@@ -218,6 +218,20 @@ public class NotificationPreferenceControllerTest {
         assertTrue(mController.isChannelConfigurable());
     }
 
+    @Test
+    public void testIsConfigurable_appLevel() {
+        NotificationBackend.AppRow appRow = new NotificationBackend.AppRow();
+        appRow.lockedChannelId = "something";
+        appRow.lockedImportance = true;
+
+        mController.onResume(appRow, mock(NotificationChannel.class), null, null);
+        assertFalse(mController.isChannelConfigurable());
+
+        appRow.lockedImportance = false;
+        mController.onResume(appRow, mock(NotificationChannel.class), null, null);
+        assertTrue(mController.isChannelConfigurable());
+    }
+
     @Test
     public void testIsChannelBlockable_nonSystemAppsBlockable() {
         NotificationBackend.AppRow appRow = new NotificationBackend.AppRow();