diff --git a/sample/src/main/java/jp/kshoji/blemidi/sample/CentralActivity.java b/sample/src/main/java/jp/kshoji/blemidi/sample/CentralActivity.java
index fd18da2..c504f4e 100644
--- a/sample/src/main/java/jp/kshoji/blemidi/sample/CentralActivity.java
+++ b/sample/src/main/java/jp/kshoji/blemidi/sample/CentralActivity.java
@@ -441,7 +441,6 @@ public void onCreate(final Bundle savedInstanceState) {
 
         ListView midiInputEventListView = (ListView) findViewById(R.id.midiInputEventListView);
         midiInputEventAdapter = new ArrayAdapter<>(this, R.layout.midi_event, R.id.midiEventDescriptionTextView);
-        midiInputEventAdapter = new ArrayAdapter<>(this, R.layout.midi_event, R.id.midiEventDescriptionTextView);
         midiInputEventListView.setAdapter(midiInputEventAdapter);
 
         ListView midiOutputEventListView = (ListView) findViewById(R.id.midiOutputEventListView);