diff --git a/includes/mysql_functions.php b/includes/mysql_functions.php
index 86b7ec0..2c3f213 100644
--- a/includes/mysql_functions.php
+++ b/includes/mysql_functions.php
@@ -11,6 +11,7 @@ function dbconnect($dbhost, $dbuser, $dbpass, $dbname ) {
 		die(_FATALERROR." "._NOTCONNECTED);
 	}
 	mysql_select_db($dbname, $mysql_access);
+	mysql_query("SET SESSION sql_mode = 'MYSQL40'");
 	return $mysql_access;
 }
 
diff --git a/includes/mysqli_functions.php b/includes/mysqli_functions.php
index ad5689d..b4a9a8a 100644
--- a/includes/mysqli_functions.php
+++ b/includes/mysqli_functions.php
@@ -9,6 +9,7 @@ function dbconnect($dbhost, $dbuser, $dbpass, $dbname ) {
 		include(_BASEDIR."languages/en.php"); // Because we haven't got a language set yet.
 		die(_FATALERROR." "._NOTCONNECTED);
 	}
+	mysqli_query($mysql_access, "SET SESSION sql_mode = 'MYSQL40'");
 	return $mysql_access;
 }
 
diff --git a/install/install.php b/install/install.php
index 05711e1..a647d8a 100644
--- a/install/install.php
+++ b/install/install.php
@@ -152,7 +152,7 @@ function random_string ($charset_string, $length)
 			$penname = descript($_POST['newpenname']);
 			if((!$_POST['email']) && !isADMIN) $fail .= "<div style='text-align: center;'>"._EMAILREQUIRED." "._TRYAGAIN."</div>";
 			if($penname && !preg_match("!^[a-z0-9_ ]{3,30}$!i", $penname)) $fail = "<div style='text-align: center;'>"._BADUSERNAME." "._TRYAGAIN."</div>";
-			if(!preg_match("/[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+/i", $_POST[email])) $fail = "<div style='text-align: center;'>"._INVALIDEMAIL." "._TRYAGAIN."</div>";
+			if(!preg_match("/^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9.-]+$/", $_POST[email])) $fail = "<div style='text-align: center;'>"._INVALIDEMAIL." "._TRYAGAIN."</div>";
 			if($_POST['password'] == $_POST['password2']) $encryptpassword = md5($_POST[password]);
 			else $fail =  write_message(_PASSWORDTWICE);
 			if(!isset($fail)) {