diff --git a/src/BlockEntities/FlowerPotEntity.h b/src/BlockEntities/FlowerPotEntity.h
index da3fe9b7e..e3570eb9a 100644
--- a/src/BlockEntities/FlowerPotEntity.h
+++ b/src/BlockEntities/FlowerPotEntity.h
@@ -53,7 +53,7 @@ public:
 	cItem GetItem(void) const { return m_Item; }
 	
 	/** Set the item in the flower pot */
-	void SetItem(const cItem a_Item) { m_Item = a_Item; }
+	void SetItem(const cItem & a_Item) { m_Item = a_Item; }
 	
 	// tolua_end