diff --git a/docs/scripts/generate_web.php b/docs/scripts/generate_web.php
index 68f11158..1f29bd3e 100755
--- a/docs/scripts/generate_web.php
+++ b/docs/scripts/generate_web.php
@@ -24,7 +24,7 @@
 set_time_limit(0);
 
 $search = array(
-    '/(<HTML.*<META.*HTTP-EQUIV="Content-type".*charset=(.*)".*<BODY[^>]+>)/mSs',
+    '/(<HTML.*<META.*HTTP-EQUIV="Content-type".*charset=(.*?)".*?<BODY[^>]+>)/mSs',
     '/(<\/BODY\s*><\/HTML\s*>)/mS'
 );