diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/activity/DetailActivity.java b/app/src/leanback/java/com/fongmi/android/tv/ui/activity/DetailActivity.java
index 2db2c7c5c..2de5650b3 100644
--- a/app/src/leanback/java/com/fongmi/android/tv/ui/activity/DetailActivity.java
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/activity/DetailActivity.java
@@ -137,7 +137,7 @@ public class DetailActivity extends BaseActivity implements KeyDown.Listener {
         mBinding.flag.addOnChildViewHolderSelectedListener(new OnChildViewHolderSelectedListener() {
             @Override
             public void onChildViewHolderSelected(@NonNull RecyclerView parent, @Nullable RecyclerView.ViewHolder child, int position, int subposition) {
-                setFlagActivated((Vod.Flag) mFlagAdapter.get(position));
+                if (mFlagAdapter.size() > 0) setFlagActivated((Vod.Flag) mFlagAdapter.get(position));
             }
         });
         mBinding.group.addOnChildViewHolderSelectedListener(new OnChildViewHolderSelectedListener() {