diff --git a/src/main/java/com/maestrano/account/MnoBill.java b/src/main/java/com/maestrano/account/MnoBill.java
index <HASH>..<HASH> 100644
--- a/src/main/java/com/maestrano/account/MnoBill.java
+++ b/src/main/java/com/maestrano/account/MnoBill.java
@@ -51,7 +51,7 @@ public class MnoBill extends MnoObject {
 			if (bill.id != null && !bill.id.isEmpty()) {
 				MnoBill newBill = delete(bill.id);
 				bill.merge(newBill);
-				return bill.status.equals("cancelled");
+				return "cancelled".equals(bill.status);
 			}
 
 			return false;
fix #5 Throw exception if bill cancellation fails