diff --git a/ashley/src/com/badlogic/ashley/core/Engine.java b/ashley/src/com/badlogic/ashley/core/Engine.java
index 82e38a94..9d5dec2f 100644
--- a/ashley/src/com/badlogic/ashley/core/Engine.java
+++ b/ashley/src/com/badlogic/ashley/core/Engine.java
@@ -363,6 +363,8 @@ private void updateFamilyMembership (Entity entity, boolean removing) {
 
 		addListenerBits.clear();
 		removeListenerBits.clear();
+		bitsPool.free(addListenerBits);
+		bitsPool.free(removeListenerBits);
 		entityListeners.end();
 		notifying = false;
 	}