killbill-memoizeit

diff --git a/analytics/src/main/java/com/ning/billing/analytics/model/BusinessAccount.java b/analytics/src/main/java/com/ning/billing/analytics/model/BusinessAccount.java
index f41991d..b8b056c 100644
--- a/analytics/src/main/java/com/ning/billing/analytics/model/BusinessAccount.java
+++ b/analytics/src/main/java/com/ning/billing/analytics/model/BusinessAccount.java
@@ -27,7 +27,7 @@ public class BusinessAccount {
     private DateTime createdDt = null;
     private DateTime updatedDt = null;
 
-    private final String key;
+    private String key;
     private String name;
     private BigDecimal balance;
     private DateTime lastInvoiceDate;