diff --git a/api/src/org/apache/cloudstack/api/BaseCmd.java b/api/src/org/apache/cloudstack/api/BaseCmd.java
index ac8778539f2..d89f5ea1b3c 100644
--- a/api/src/org/apache/cloudstack/api/BaseCmd.java
+++ b/api/src/org/apache/cloudstack/api/BaseCmd.java
@@ -308,14 +308,14 @@ public abstract class BaseCmd {
         StringBuffer sb = new StringBuffer();
         if (RESPONSE_TYPE_JSON.equalsIgnoreCase(responseType)) {
             // JSON response
-            sb.append("{ \"" + getCommandName() + "\" : { " + "\"@attributes\":{\"cloud-stack-version\":\"" + _mgr.getVersion() + "\"},");
+            sb.append("{ \"" + getCommandName() + "\" : { " + "\"@attributes\":{\"cloudstack-version\":\"" + _mgr.getVersion() + "\"},");
             sb.append("\"errorcode\" : \"" + apiException.getErrorCode() + "\", \"description\" : \"" + apiException.getDescription() + "\" } }");
         } else {
             sb.append("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>");
             sb.append("<" + getCommandName() + ">");
             sb.append("<errorcode>" + apiException.getErrorCode() + "</errorcode>");
             sb.append("<description>" + escapeXml(apiException.getDescription()) + "</description>");
-            sb.append("</" + getCommandName() + " cloud-stack-version=\"" + _mgr.getVersion() + "\">");
+            sb.append("</" + getCommandName() + " cloudstack-version=\"" + _mgr.getVersion() + "\">");
         }
         return sb.toString();
     }
@@ -326,10 +326,10 @@ public abstract class BaseCmd {
 
         // set up the return value with the name of the response
         if (RESPONSE_TYPE_JSON.equalsIgnoreCase(responseType)) {
-            prefixSb.append("{ \"" + getCommandName() + "\" : { \"@attributes\":{\"cloud-stack-version\":\"" + _mgr.getVersion() + "\"},");
+            prefixSb.append("{ \"" + getCommandName() + "\" : { \"@attributes\":{\"cloudstack-version\":\"" + _mgr.getVersion() + "\"},");
         } else {
             prefixSb.append("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>");
-            prefixSb.append("<" + getCommandName() + " cloud-stack-version=\"" + _mgr.getVersion() + "\">");
+            prefixSb.append("<" + getCommandName() + " cloudstack-version=\"" + _mgr.getVersion() + "\">");
         }
 
         int i = 0;
diff --git a/server/src/com/cloud/api/ApiServlet.java b/server/src/com/cloud/api/ApiServlet.java
index 7e1f2c39bf6..895481938e7 100755
--- a/server/src/com/cloud/api/ApiServlet.java
+++ b/server/src/com/cloud/api/ApiServlet.java
@@ -411,10 +411,13 @@ public class ApiServlet extends HttpServlet {
                     }
                 }
             }
-            sb.append(" } }");
+            sb.append(" }");
+            sb.append(", \"cloudstack-version\": \"");
+            sb.append(ApiDBUtils.getVersion());
+            sb.append("\" }");
         } else {
             sb.append("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>");
-            sb.append("<loginresponse cloud-stack-version=\"" + ApiDBUtils.getVersion() + "\">");
+            sb.append("<loginresponse cloudstack-version=\"" + ApiDBUtils.getVersion() + "\">");
             sb.append("<timeout>" + inactiveInterval + "</timeout>");
             Enumeration attrNames = session.getAttributeNames();
             if (attrNames != null) {
@@ -441,10 +444,13 @@ public class ApiServlet extends HttpServlet {
     private String getLogoutSuccessResponse(String responseType) {
         StringBuffer sb = new StringBuffer();
         if (BaseCmd.RESPONSE_TYPE_JSON.equalsIgnoreCase(responseType)) {
-            sb.append("{ \"logoutresponse\" : { \"description\" : \"success\" } }");
+            sb.append("{ \"logoutresponse\" : { \"description\" : \"success\" }");
+            sb.append(", \"cloudstack-version\": \"");
+            sb.append(ApiDBUtils.getVersion());
+            sb.append("\" }");
         } else {
             sb.append("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>");
-            sb.append("<logoutresponse cloud-stack-version=\"" + ApiDBUtils.getVersion() + "\">");
+            sb.append("<logoutresponse cloudstack-version=\"" + ApiDBUtils.getVersion() + "\">");
             sb.append("<description>success</description>");
             sb.append("</logoutresponse>");
         }
diff --git a/server/src/com/cloud/api/response/ApiResponseSerializer.java b/server/src/com/cloud/api/response/ApiResponseSerializer.java
index 4a4d94306b1..af37aa2807e 100644
--- a/server/src/com/cloud/api/response/ApiResponseSerializer.java
+++ b/server/src/com/cloud/api/response/ApiResponseSerializer.java
@@ -122,7 +122,9 @@ public class ApiResponseSerializer {
                     sb.append("{ }");
                 }
             }
-            sb.append(" }");            
+            sb.append(", \"cloudstack-version\": \"");
+            sb.append(ApiDBUtils.getVersion());
+            sb.append("\" }");
             return sb.toString();
         }
         return null;
@@ -131,7 +133,7 @@ public class ApiResponseSerializer {
     private static String toXMLSerializedString(ResponseObject result) {
         StringBuilder sb = new StringBuilder();
         sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
-        sb.append("<").append(result.getResponseName()).append(" cloud-stack-version=\"").append(ApiDBUtils.getVersion()).append("\">");
+        sb.append("<").append(result.getResponseName()).append(" cloudstack-version=\"").append(ApiDBUtils.getVersion()).append("\">");
 
         if (result instanceof ListResponse) {
             Integer count = ((ListResponse) result).getCount();