diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/util/IOUtils.java b/cas-client-core/src/main/java/org/jasig/cas/client/util/IOUtils.java
index e8dd77e..f3c3107 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/util/IOUtils.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/util/IOUtils.java
@@ -10,7 +10,7 @@ import java.nio.charset.Charset;
  * @author Marvin S. Addison
  * @since 3.3.4
  */
-public class IOUtils {
+public final class IOUtils {
 
     /** UTF-8 character set. */
     public static final Charset UTF8 = Charset.forName("UTF-8");
diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/util/ThreadLocalXPathExpression.java b/cas-client-core/src/main/java/org/jasig/cas/client/util/ThreadLocalXPathExpression.java
index 86a4a09..f1ed1f4 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/util/ThreadLocalXPathExpression.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/util/ThreadLocalXPathExpression.java
@@ -16,10 +16,10 @@ import javax.xml.xpath.*;
 public class ThreadLocalXPathExpression extends ThreadLocal<XPathExpression> implements XPathExpression {
 
     /** XPath expression */
-    private String expression;
+    private final String expression;
 
     /** Namespace context. */
-    private NamespaceContext context;
+    private final NamespaceContext context;
 
     /**
      * Creates a new instance from an XPath expression and namespace context.
diff --git a/cas-client-support-saml/src/main/java/org/jasig/cas/client/validation/Saml11TicketValidator.java b/cas-client-support-saml/src/main/java/org/jasig/cas/client/validation/Saml11TicketValidator.java
index 33cb005..6446544 100644
--- a/cas-client-support-saml/src/main/java/org/jasig/cas/client/validation/Saml11TicketValidator.java
+++ b/cas-client-support-saml/src/main/java/org/jasig/cas/client/validation/Saml11TicketValidator.java
@@ -197,7 +197,6 @@ public final class Saml11TicketValidator extends AbstractUrlBasedTicketValidator
             conn = this.getURLConnectionFactory().buildHttpURLConnection(validationUrl.openConnection());
             conn.setRequestMethod("POST");
             conn.setRequestProperty("Content-Type", "text/xml");
-            conn.setRequestProperty("Content-Type", "text/xml");
             conn.setRequestProperty("Content-Length", Integer.toString(request.length()));
             conn.setRequestProperty("SOAPAction", "http://www.oasis-open.org/committees/security");
             conn.setUseCaches(false);