Index: lams_common/src/java/org/lamsfoundation/lams/util/ValidationUtil.java
===================================================================
diff -u -rbffa8b2fb1fb58faf9e15e24aae8f0d58313de3f -r180441aefbe57bc8a5dfb6798982b0f2ff09fcc0
--- lams_common/src/java/org/lamsfoundation/lams/util/ValidationUtil.java	(.../ValidationUtil.java)	(revision bffa8b2fb1fb58faf9e15e24aae8f0d58313de3f)
+++ lams_common/src/java/org/lamsfoundation/lams/util/ValidationUtil.java	(.../ValidationUtil.java)	(revision 180441aefbe57bc8a5dfb6798982b0f2ff09fcc0)
@@ -31,7 +31,7 @@
  */
 public class ValidationUtil {
 
-    private final static Pattern REGEX_USER_NAME = Pattern.compile("^[^<>^!#&()/\\|'\"?,.:{}= ~`*@%$]*$");
+    private final static Pattern REGEX_USER_NAME = Pattern.compile("^[^<>^!#&()/\\|\"?,:{}= ~`*%$]*$");
 
     private final static Pattern REGEX_FIRST_LAST_NAME = Pattern.compile("^[\\p{L}]++(?:[' -][\\p{L}]++)*+\\.?$");