diff --git a/packages/SettingsLib/CollapsingToolbarBaseActivity/src/com/android/settingslib/collapsingtoolbar/CollapsingToolbarBaseActivity.java b/packages/SettingsLib/CollapsingToolbarBaseActivity/src/com/android/settingslib/collapsingtoolbar/CollapsingToolbarBaseActivity.java
index 395a9a716a9bc..8b1e397c2199c 100644
--- a/packages/SettingsLib/CollapsingToolbarBaseActivity/src/com/android/settingslib/collapsingtoolbar/CollapsingToolbarBaseActivity.java
+++ b/packages/SettingsLib/CollapsingToolbarBaseActivity/src/com/android/settingslib/collapsingtoolbar/CollapsingToolbarBaseActivity.java
@@ -58,7 +58,9 @@ public class CollapsingToolbarBaseActivity extends FragmentActivity implements
         super.setContentView(R.layout.collapsing_toolbar_base_layout);
         mCollapsingToolbarLayout = findViewById(R.id.collapsing_toolbar);
         mAppBarLayout = findViewById(R.id.app_bar);
-        mAppBarLayout.addOnOffsetChangedListener(this);
+        if (mAppBarLayout != null) {
+            mAppBarLayout.addOnOffsetChangedListener(this);
+        }
         if (savedInstanceState != null) {
             mIsToolbarCollapsed = savedInstanceState.getBoolean(KEY_IS_TOOLBAR_COLLAPSED);
         }