diff --git a/lam/lib/account.inc b/lam/lib/account.inc
index 5d55b649..93130f52 100644
--- a/lam/lib/account.inc
+++ b/lam/lib/account.inc
@@ -480,7 +480,7 @@ function get_preg($argument, $regexp) {
 					$pregexpr = '/^(\\+)*([0-9a-zA-Z\\.\\ \\(\\)\\/-])*$/';
 					break;
 		case "email":
-					$pregexpr = '/^([0-9a-zA-Z+\\/\\._-])+[@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*$/';
+					$pregexpr = '/^([0-9a-zA-Z!~#+*%\\$\\/\\._-])+[@]([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';