diff --git a/src/com/lushprojects/circuitjs1/client/QueryParameters.java b/src/com/lushprojects/circuitjs1/client/QueryParameters.java
index 320f6c0e..6114df1e 100644
--- a/src/com/lushprojects/circuitjs1/client/QueryParameters.java
+++ b/src/com/lushprojects/circuitjs1/client/QueryParameters.java
@@ -20,12 +20,11 @@
 package com.lushprojects.circuitjs1.client;
 
 import java.util.HashMap;
-import java.util.Map;
 import com.google.gwt.http.client.URL;
 
 public class QueryParameters
 {
-    private Map map = new HashMap();
+    private HashMap<String, String> map = new HashMap<String, String>();
 
     public QueryParameters()
     {