diff --git a/core/src/com/agateau/pixelwheels/racescreen/Helicopter.java b/core/src/com/agateau/pixelwheels/racescreen/Helicopter.java
index 5b829152..ef0b04f3 100644
--- a/core/src/com/agateau/pixelwheels/racescreen/Helicopter.java
+++ b/core/src/com/agateau/pixelwheels/racescreen/Helicopter.java
@@ -179,10 +179,10 @@ public void reset() {}
 
     @Override
     public void dispose() {
-        sPool.free(this);
         if (mSoundPlayer != null) {
             mSoundPlayer.stop();
         }
+        sPool.free(this);
     }
 
     public void setDestination(OrientedPoint point) {