1 files changed, 1 insertions, 1 deletions
diff --git a/phpBB/develop/regex.php b/phpBB/develop/regex.php
index 1719fe03e9..7abecc9650 100644
--- a/phpBB/develop/regex.php
+++ b/phpBB/develop/regex.php
@@ -49,7 +49,7 @@ $scheme = '[a-z][a-z\d+\-.]*';
 $reg_name = "(?:[$unreserved$sub_delims|@]+|$pct_encoded)+"; // rfc: * instead of + and no "|" and no "@" (included instead of userinfo
 //$userinfo = "(?:(?:[$unreserved$sub_delims:]+|$pct_encoded))*";
 $ipv4_simple = '[0-9.]+';
-$ipv6_simple = '\[[a-z0-9.:]+\]';
+$ipv6_simple = '\[[a-z0-9.]+:[a-z0-9.]+:[a-z0-9.:]+\]';
 $host = "(?:$reg_name|$ipv4_simple|$ipv6_simple)";
 $port = '\d*';
 //$authority = "(?:$userinfo@)?$host(?::$port)?";