diff --git a/components/org.apache.stratos.rest.endpoint/src/main/java/org/apache/stratos/rest/endpoint/api/StratosApiV41Utils.java b/components/org.apache.stratos.rest.endpoint/src/main/java/org/apache/stratos/rest/endpoint/api/StratosApiV41Utils.java
index 9cf8b33575..39d61010e9 100644
--- a/components/org.apache.stratos.rest.endpoint/src/main/java/org/apache/stratos/rest/endpoint/api/StratosApiV41Utils.java
+++ b/components/org.apache.stratos.rest.endpoint/src/main/java/org/apache/stratos/rest/endpoint/api/StratosApiV41Utils.java
@@ -1213,7 +1213,7 @@ private static void findCartridgesInServiceGroup(ServiceGroup serviceGroup, List
 
         if (serviceGroup.getCartridges() != null) {
             for (String cartridge : serviceGroup.getCartridges()) {
-                if (!cartridges.contains(cartridge) & cartridge !=null) {
+                if (cartridge !=null && cartridges.contains(cartridge)) {
                     cartridges.add(cartridge);
                 }
             }