--- old/src/java.xml.ws/share/classes/com/sun/xml/internal/ws/model/RuntimeModeler.java	2017-05-03 18:05:55.931094838 +0300
+++ new/src/java.xml.ws/share/classes/com/sun/xml/internal/ws/model/RuntimeModeler.java	2017-05-03 18:05:55.787094842 +0300
@@ -1180,7 +1180,7 @@
                     if(p == null)
                         resRpcParams.put(resRpcParams.size()+10000, param);
                     else
-                        resRpcParams.put(param.getIndex(), param);
+                        resRpcParams.put(p.getIndex(), param);
                 }
             }else{
                 javaMethod.addParameter(param);