diff --git a/Changes b/Changes
index 7af70c1..2868883 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,7 @@
 Revision history for MaxMind minFraud Java API
+1.50 Mar 13th 2012
+        - Check countryMatch instead of score for successful results. Score is
+          only avail for minfraud_version 1.3 ( Boris Zentner )
 1.49 Februar 19th 2009
 	- Add minfraud3.maxmind.com to the serverlist
 1.48 October 3th 2008
diff --git a/com/maxmind/ws/CreditCardFraudDetection.java b/com/maxmind/ws/CreditCardFraudDetection.java
index ca46397..e8e6181 100644
--- a/com/maxmind/ws/CreditCardFraudDetection.java
+++ b/com/maxmind/ws/CreditCardFraudDetection.java
@@ -41,7 +41,7 @@ public CreditCardFraudDetection() {
   }
   public CreditCardFraudDetection(boolean s) {
     url = "app/ccv2r";
-    check_field = "score";
+    check_field = "countryMatch";
     allowed_fields = new HashMap();
     for (int i = 0; i < allowedfields.length; i++) {
       allowed_fields.put(allowedfields[i],new Integer(1));
diff --git a/com/maxmind/ws/HTTPBase.java b/com/maxmind/ws/HTTPBase.java
index 78a19f8..4880d37 100644
--- a/com/maxmind/ws/HTTPBase.java
+++ b/com/maxmind/ws/HTTPBase.java
@@ -40,7 +40,7 @@ public class HTTPBase{
     public boolean isSecure = true;
     public float timeout = 10; // default timeout is 10 seconds
     public boolean debug = false;
-    public String check_field = "score";
+    public String check_field = "countryMatch";
     public boolean useDNS = false;
     public long wsIpaddrRefreshTimeout = 18000;
     private static Pattern ippattern =  Pattern.compile("(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3};)*\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}");
@@ -266,7 +266,7 @@ boolean querySingleServer(String server) {
 	    query_data[n] = new NameValuePair(key,value);
 	    n++;
 	}
-	query_data[n] = new NameValuePair("clientAPI","Java/1.49");
+	query_data[n] = new NameValuePair("clientAPI","Java/1.50");
 	// scheme already has the name of the proctol
 	// append the domain name of the server, url of the web service
 	// and the query string to the string named url2