diff --git a/core/src/main/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap11Wsdl4jDefinitionBuilder.java b/core/src/main/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap11Wsdl4jDefinitionBuilder.java
index 5929dcf5..2a4617dd 100644
--- a/core/src/main/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap11Wsdl4jDefinitionBuilder.java
+++ b/core/src/main/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap11Wsdl4jDefinitionBuilder.java
@@ -37,15 +37,16 @@ import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.ParserConfigurationException;
 
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.xml.sax.SAXException;
+
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.core.io.Resource;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 import org.springframework.ws.wsdl.wsdl11.DynamicWsdl11Definition;
 import org.springframework.xml.namespace.QNameUtils;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.xml.sax.SAXException;
 
 /**
  * Builds a <code>WsdlDefinition</code> with a SOAP 1.1 binding based on an XSD schema. This builder iterates over all
@@ -278,7 +279,7 @@ public class XsdBasedSoap11Wsdl4jDefinitionBuilder extends AbstractSoap11Wsdl4jD
             QName elementName = (QName) iterator.next();
             if (elementName != null &&
                     (isRequestMessage(elementName) || isResponseMessage(elementName) || isFaultMessage(elementName))) {
-                if (!StringUtils.hasLength(definition.getPrefix(elementName.getNamespaceURI()))) {
+                if (definition.getPrefix(elementName.getNamespaceURI()) == null) {
                     int i = 0;
                     while (true) {
                         String prefix = schemaPrefix + Integer.toString(i);
diff --git a/core/src/main/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap12Wsdl4jDefinitionBuilder.java b/core/src/main/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap12Wsdl4jDefinitionBuilder.java
index 9f986a1d..c0cdbc7c 100755
--- a/core/src/main/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap12Wsdl4jDefinitionBuilder.java
+++ b/core/src/main/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap12Wsdl4jDefinitionBuilder.java
@@ -37,15 +37,16 @@ import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.ParserConfigurationException;
 
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.xml.sax.SAXException;
+
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.core.io.Resource;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 import org.springframework.ws.wsdl.wsdl11.DynamicWsdl11Definition;
 import org.springframework.xml.namespace.QNameUtils;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.xml.sax.SAXException;
 
 /**
  * Builds a <code>WsdlDefinition</code> with a SOAP 1.2 binding based on an XSD schema. This builder iterates over all
@@ -86,34 +87,22 @@ import org.xml.sax.SAXException;
 public class XsdBasedSoap12Wsdl4jDefinitionBuilder extends AbstractSoap12Wsdl4jDefinitionBuilder
         implements InitializingBean {
 
-    /**
-     * The default suffix used to detect request elements in the schema.
-     */
+    /** The default suffix used to detect request elements in the schema. */
     public static final String DEFAULT_REQUEST_SUFFIX = "Request";
 
-    /**
-     * The default suffix used to detect response elements in the schema.
-     */
+    /** The default suffix used to detect response elements in the schema. */
     public static final String DEFAULT_RESPONSE_SUFFIX = "Response";
 
-    /**
-     * The default suffix used to detect fault elements in the schema.
-     */
+    /** The default suffix used to detect fault elements in the schema. */
     public static final String DEFAULT_FAULT_SUFFIX = "Fault";
 
-    /**
-     * The default prefix used to register the schema namespace in the WSDL.
-     */
+    /** The default prefix used to register the schema namespace in the WSDL. */
     public static final String DEFAULT_SCHEMA_PREFIX = "schema";
 
-    /**
-     * The default prefix used to register the target namespace in the WSDL.
-     */
+    /** The default prefix used to register the target namespace in the WSDL. */
     public static final String DEFAULT_PREFIX = "tns";
 
-    /**
-     * The suffix used to create a service name from a port type name.
-     */
+    /** The suffix used to create a service name from a port type name. */
     public static final String SERVICE_SUFFIX = "Service";
 
     private Resource schemaResource;
@@ -165,16 +154,12 @@ public class XsdBasedSoap12Wsdl4jDefinitionBuilder extends AbstractSoap12Wsdl4jD
         this.faultSuffix = faultSuffix;
     }
 
-    /**
-     * Sets the port type name used for this definition. Required.
-     */
+    /** Sets the port type name used for this definition. Required. */
     public void setPortTypeName(String portTypeName) {
         this.portTypeName = portTypeName;
     }
 
-    /**
-     * Sets the target namespace used for this definition.
-     */
+    /** Sets the target namespace used for this definition. */
     public void setTargetNamespace(String targetNamespace) {
         this.targetNamespace = targetNamespace;
     }
@@ -197,9 +182,7 @@ public class XsdBasedSoap12Wsdl4jDefinitionBuilder extends AbstractSoap12Wsdl4jD
         this.prefix = prefix;
     }
 
-    /**
-     * Sets the XSD schema to use for generating the WSDL.
-     */
+    /** Sets the XSD schema to use for generating the WSDL. */
     public void setSchema(Resource schemaResource) {
         Assert.notNull(schemaResource, "'schema' must not be null");
         Assert.isTrue(schemaResource.exists(), "schema \"" + schemaResource + "\" does not exit");
@@ -232,9 +215,7 @@ public class XsdBasedSoap12Wsdl4jDefinitionBuilder extends AbstractSoap12Wsdl4jD
         }
     }
 
-    /**
-     * Adds the target namespace and schema namespace to the definition.
-     */
+    /** Adds the target namespace and schema namespace to the definition. */
     protected void populateDefinition(Definition definition) throws WSDLException {
         super.populateDefinition(definition);
         definition.setTargetNamespace(targetNamespace);
@@ -244,9 +225,7 @@ public class XsdBasedSoap12Wsdl4jDefinitionBuilder extends AbstractSoap12Wsdl4jD
         }
     }
 
-    /**
-     * Does nothing.
-     */
+    /** Does nothing. */
     protected void buildImports(Definition definition) throws WSDLException {
     }
 
@@ -301,7 +280,7 @@ public class XsdBasedSoap12Wsdl4jDefinitionBuilder extends AbstractSoap12Wsdl4jD
             QName elementName = (QName) iterator.next();
             if (elementName != null &&
                     (isRequestMessage(elementName) || isResponseMessage(elementName) || isFaultMessage(elementName))) {
-                if (!StringUtils.hasLength(definition.getPrefix(elementName.getNamespaceURI()))) {
+                if (definition.getPrefix(elementName.getNamespaceURI()) == null) {
                     int i = 0;
                     while (true) {
                         String prefix = schemaPrefix + Integer.toString(i);
@@ -517,9 +496,7 @@ public class XsdBasedSoap12Wsdl4jDefinitionBuilder extends AbstractSoap12Wsdl4jD
         operation.setName(operationName);
     }
 
-    /**
-     * Sets the name of the service to the name of the port type, with "Service" appended to it.
-     */
+    /** Sets the name of the service to the name of the port type, with "Service" appended to it. */
     protected void populateService(Service service) throws WSDLException {
         service.setQName(new QName(targetNamespace, portTypeName + SERVICE_SUFFIX));
     }
diff --git a/core/src/test/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap11Wsdl4jDefinitionBuilderTest.java b/core/src/test/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap11Wsdl4jDefinitionBuilderTest.java
index 2d32cddc..86733a53 100644
--- a/core/src/test/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap11Wsdl4jDefinitionBuilderTest.java
+++ b/core/src/test/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap11Wsdl4jDefinitionBuilderTest.java
@@ -24,9 +24,11 @@ import javax.xml.transform.dom.DOMResult;
 
 import org.custommonkey.xmlunit.XMLTestCase;
 import org.custommonkey.xmlunit.XMLUnit;
+import org.w3c.dom.Document;
+
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.ws.wsdl.wsdl11.Wsdl11Definition;
-import org.w3c.dom.Document;
+import org.springframework.xml.transform.StringResult;
 
 public class XsdBasedSoap11Wsdl4jDefinitionBuilderTest extends XMLTestCase {
 
@@ -144,6 +146,20 @@ public class XsdBasedSoap11Wsdl4jDefinitionBuilderTest extends XMLTestCase {
         assertXMLEqual("Invalid WSDL built", expected, result);
     }
 
+    public void testNoSchemaPrefix() throws Exception {
+        builder.setSchema(new ClassPathResource("single.xsd", getClass()));
+        builder.setPortTypeName("Order");
+        builder.setTargetNamespace("http://www.springframework.org/spring-ws/single/definitions");
+        builder.setSchemaPrefix("");
+        builder.afterPropertiesSet();
+
+        buildAll();
+
+        Wsdl11Definition definition = builder.getDefinition();
+
+        transformer.transform(definition.getSource(), new StringResult());
+    }
+
     private void buildAll() {
         builder.buildDefinition();
         builder.buildImports();
diff --git a/core/src/test/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap12Wsdl4jDefinitionBuilderTest.java b/core/src/test/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap12Wsdl4jDefinitionBuilderTest.java
index 0253b05a..37c27834 100644
--- a/core/src/test/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap12Wsdl4jDefinitionBuilderTest.java
+++ b/core/src/test/java/org/springframework/ws/wsdl/wsdl11/builder/XsdBasedSoap12Wsdl4jDefinitionBuilderTest.java
@@ -24,9 +24,11 @@ import javax.xml.transform.dom.DOMResult;
 
 import org.custommonkey.xmlunit.XMLTestCase;
 import org.custommonkey.xmlunit.XMLUnit;
+import org.w3c.dom.Document;
+
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.ws.wsdl.wsdl11.Wsdl11Definition;
-import org.w3c.dom.Document;
+import org.springframework.xml.transform.StringResult;
 
 public class XsdBasedSoap12Wsdl4jDefinitionBuilderTest extends XMLTestCase {
 
@@ -73,6 +75,20 @@ public class XsdBasedSoap12Wsdl4jDefinitionBuilderTest extends XMLTestCase {
         assertXMLEqual("Invalid WSDL built", expected, result);
     }
 
+    public void testNoSchemaPrefix() throws Exception {
+        builder.setSchema(new ClassPathResource("single.xsd", getClass()));
+        builder.setPortTypeName("Order");
+        builder.setTargetNamespace("http://www.springframework.org/spring-ws/single/definitions");
+        builder.setSchemaPrefix("");
+        builder.afterPropertiesSet();
+
+        buildAll();
+
+        Wsdl11Definition definition = builder.getDefinition();
+
+        transformer.transform(definition.getSource(), new StringResult());
+    }
+
     private void buildAll() {
         builder.buildDefinition();
         builder.buildImports();