diff --git a/lam/lib/account.inc b/lam/lib/account.inc
index 51c88987..5d55b649 100644
--- a/lam/lib/account.inc
+++ b/lam/lib/account.inc
@@ -483,7 +483,7 @@ function get_preg($argument, $regexp) {
 					$pregexpr = '/^([0-9a-zA-Z+\\/\\._-])+[@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*$/';
 					break;
 		case "emailWithName":
-					$pregexpr = '/^([[:alnum:] ])+ <([0-9a-zA-Z+\\/\\._-])+[@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*>$/u';
+					$pregexpr = '/^([[:alnum:] !~#+*%\\$\\(\\)_-])+ <([0-9a-zA-Z!~#+*%\\$\\/\\._-])+[@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*>$/u';
 					break;
 		case "mailLocalAddress":
 					$pregexpr = '/^([0-9a-zA-Z+\\/\\._-])+([@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*)?$/';