diff --git a/src/main/java/org/jboss/netty/util/internal/StringUtil.java b/src/main/java/org/jboss/netty/util/internal/StringUtil.java
index 0d76039013..c50d0a4c8e 100644
--- a/src/main/java/org/jboss/netty/util/internal/StringUtil.java
+++ b/src/main/java/org/jboss/netty/util/internal/StringUtil.java
@@ -24,26 +24,27 @@ package org.jboss.netty.util.internal;
 
 /**
  * String utility class.
- * 
+ *
  * @author The Netty Project (netty-dev@lists.jboss.org)
  * @author Trustin Lee (tlee@redhat.com)
  * @version $Rev$, $Date$
  */
 public class StringUtil {
-    
+
     private StringUtil() {
+        // Unused.
     }
-    
+
     /**
-     * Strip an Object of it's ISO control characters. 
-     * 
-     * @param value 
+     * Strip an Object of it's ISO control characters.
+     *
+     * @param value
      *          The Object that should be stripped. This objects toString method will
      *          called and the result passed to {@link #stripControlCharacters(String)}.
      * @return {@code String}
-     *          A new String instance with its hexadecimal control characters replaced 
-     *          by a space. Or the unmodified String if it does not contain any ISO 
-     *          controll characters.
+     *          A new String instance with its hexadecimal control characters replaced
+     *          by a space. Or the unmodified String if it does not contain any ISO
+     *          control characters.
      */
     public static String stripControlCharacters(Object value) {
         if (value == null) {
@@ -54,14 +55,14 @@ public class StringUtil {
     }
 
     /**
-     * Strip a String of it's ISO control characters. 
-     * 
-     * @param value 
-     *          The String that should be stripped. 
+     * Strip a String of it's ISO control characters.
+     *
+     * @param value
+     *          The String that should be stripped.
      * @return {@code String}
-     *          A new String instance with its hexadecimal control characters replaced 
-     *          by a space. Or the unmodified String if it does not contain any ISO 
-     *          controll characters.
+     *          A new String instance with its hexadecimal control characters replaced
+     *          by a space. Or the unmodified String if it does not contain any ISO
+     *          control characters.
      */
     public static String stripControlCharacters(String value) {
         if (value == null) {