diff --git a/core/src/main/java/org/springframework/ws/wsdl/wsdl11/provider/DefaultConcretePartProvider.java b/core/src/main/java/org/springframework/ws/wsdl/wsdl11/provider/DefaultConcretePartProvider.java
index 480136fc..56e62274 100644
--- a/core/src/main/java/org/springframework/ws/wsdl/wsdl11/provider/DefaultConcretePartProvider.java
+++ b/core/src/main/java/org/springframework/ws/wsdl/wsdl11/provider/DefaultConcretePartProvider.java
@@ -1,11 +1,11 @@
 /*
- * Copyright 2005-2010 the original author or authors.
+ * Copyright 2005-2011 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *      http://www.apache.org/licenses/LICENSE-2.0
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -76,7 +76,7 @@ public class DefaultConcretePartProvider implements BindingsProvider, ServicesPr
 
     /** Sets the suffix to append to the port type name to obtain the binding name. */
     public void setBindingSuffix(String bindingSuffix) {
-        Assert.hasText(bindingSuffix, "'bindingSuffix' must not be null");
+        Assert.notNull(bindingSuffix, "'bindingSuffix' must not be null");
         this.bindingSuffix = bindingSuffix;
     }