diff --git a/phpBB/includes/bbcode.php b/phpBB/includes/bbcode.php
index fb3a06c076..043c978e0f 100644
--- a/phpBB/includes/bbcode.php
+++ b/phpBB/includes/bbcode.php
@@ -196,15 +196,15 @@ function bbencode_second_pass($text, $uid)
 
 	// [img]image_url_here[/img] code..
 	// This one gets first-passed..
-	$patterns[] = "#\[img:$uid\]([^?].*?)\[/img:$uid\]#i";
+	$patterns[] = "#\[img:$uid\]([^?](?:[^\[]+|\[(?!url))*?)\[/img:$uid\]#i";
 	$replacements[] = $bbcode_tpl['img'];
 
 	// matches a [url]xxxx://www.phpbb.com[/url] code..
-	$patterns[] = "#\[url\]([\w]+?://([\w\#$%&~/.\-;:=,?@\]+]|\[(?!url=))*?)\[/url\]#is";
+	$patterns[] = "#\[url\]([\w]+?://([\w\#$%&~/.\-;:=,?@\]+]+|\[(?!url=))*?)\[/url\]#is";
 	$replacements[] = $bbcode_tpl['url1'];
 
 	// [url]www.phpbb.com[/url] code.. (no xxxx:// prefix).
-	$patterns[] = "#\[url\]((www|ftp)\.([\w\#$%&~/.\-;:=,?@\]+]|\[(?!url=))*?)\[/url\]#is";
+	$patterns[] = "#\[url\]((www|ftp)\.([\w\#$%&~/.\-;:=,?@\]+]+|\[(?!url=))*?)\[/url\]#is";
 	$replacements[] = $bbcode_tpl['url2'];
 
 	// [url=xxxx://www.phpbb.com]phpBB[/url] code..