killbill-memoizeit

diff --git a/api/src/main/java/com/ning/billing/catalog/api/Currency.java b/api/src/main/java/com/ning/billing/catalog/api/Currency.java
index 0e7cd7d..3bef242 100644
--- a/api/src/main/java/com/ning/billing/catalog/api/Currency.java
+++ b/api/src/main/java/com/ning/billing/catalog/api/Currency.java
@@ -31,7 +31,7 @@ public enum Currency {
 //	CAD,
 //	JPY
 
-    public Currency getDefaultCurrency() {
+    public static Currency getDefaultCurrency() {
         return Currency.USD;
     }
 }