diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutController.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutController.java
index 42d122d6f9ac5..14b0763580e93 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutController.java
@@ -209,7 +209,11 @@ public class NotificationStackScrollLayoutController {
                 public void onViewAttachedToWindow(View v) {
                     mConfigurationController.addCallback(mConfigurationListener);
                     mZenModeController.addCallback(mZenModeControllerCallback);
-                    mBarState = mStatusBarStateController.getState();
+                    final int newBarState = mStatusBarStateController.getState();
+                    if (newBarState != mBarState) {
+                        mStateListener.onStateChanged(newBarState);
+                        mStateListener.onStatePostChange();
+                    }
                     mStatusBarStateController.addCallback(
                             mStateListener, SysuiStatusBarStateController.RANK_STACK_SCROLLER);
                 }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutControllerTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutControllerTest.java
index 9f6f082d07c40..ff26a43c00062 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutControllerTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutControllerTest.java
@@ -413,6 +413,37 @@ public class NotificationStackScrollLayoutControllerTest extends SysuiTestCase {
         verify(mNotificationStackScrollLayout).updateEmptyShadeView(anyBoolean(), anyBoolean());
     }
 
+    @Test
+    public void testAttach_updatesViewStatusBarState() {
+        // GIVEN: Controller is attached
+        mController.attach(mNotificationStackScrollLayout);
+        ArgumentCaptor<StatusBarStateController.StateListener> captor =
+                ArgumentCaptor.forClass(StatusBarStateController.StateListener.class);
+        verify(mSysuiStatusBarStateController).addCallback(captor.capture(), anyInt());
+        StatusBarStateController.StateListener stateListener = captor.getValue();
+
+        // WHEN: StatusBarState changes to SHADE
+        when(mSysuiStatusBarStateController.getState()).thenReturn(SHADE);
+        stateListener.onStateChanged(SHADE);
+
+        // THEN: NSSL is updated with the current state
+        verify(mNotificationStackScrollLayout).setStatusBarState(SHADE);
+
+        // WHEN: Controller is detached
+        mController.mOnAttachStateChangeListener
+                .onViewDetachedFromWindow(mNotificationStackScrollLayout);
+
+        // WHEN: StatusBarState changes to KEYGUARD
+        when(mSysuiStatusBarStateController.getState()).thenReturn(KEYGUARD);
+
+        // WHEN: Controller is re-attached
+        mController.mOnAttachStateChangeListener
+                .onViewAttachedToWindow(mNotificationStackScrollLayout);
+
+        // THEN: NSSL is updated with the current state
+        verify(mNotificationStackScrollLayout).setStatusBarState(KEYGUARD);
+    }
+
     private LogMaker logMatcher(int category, int type) {
         return argThat(new LogMatcher(category, type));
     }