diff --git a/Parser.php b/Parser.php
index 5c4d632..c4752c8 100644
--- a/Parser.php
+++ b/Parser.php
@@ -608,7 +608,7 @@ private function parseBlock($text, &$lines)
                     break;
 
                 // table
-                case preg_match("/^((?:(?:(?:[ :]*\-[ :]*)+(?:\||\+))|(?:(?:\||\+)(?:[ :]*\-[ :]*)+)|(?:(?:[ :]*\-[ :]*)+(?:\||\+)(?:[ :]*\-[ :]*)+))+)$/", $line, $matches):
+                case preg_match("/^[\|\+]?((?::?\-+:?[\|\+])+(?:\s*:?\-+:?\s*)?)$/", $line, $matches):
                     if ($this->isBlock('table')) {
                         $block[3][0][] = $block[3][2];
                         $block[3][2] ++;