diff --git a/classes/Tools.php b/classes/Tools.php
index 23dfda7aa..acef48697 100644
--- a/classes/Tools.php
+++ b/classes/Tools.php
@@ -1588,7 +1588,7 @@ class ToolsCore
 					}
 					fwrite($write_fd, $media_domains);
 					fwrite($write_fd, $domain_rewrite_cond);
-					fwrite($write_fd, 'RewriteRule ^c/([0-9]+)(\-[_a-zA-Z0-9-\.*]*)(-[0-9]+)?/.+\.jpg$ img/c/$1$2$3.jpg [L]'."\n");
+					fwrite($write_fd, 'RewriteRule ^c/([0-9]+)(\-[\.*_a-zA-Z0-9-]*)(-[0-9]+)?/.+\.jpg$ img/c/$1$2$3.jpg [L]'."\n");
 					fwrite($write_fd, $media_domains);
 					fwrite($write_fd, $domain_rewrite_cond);
 					fwrite($write_fd, 'RewriteRule ^c/([a-zA-Z-]+)(-[0-9]+)?/.+\.jpg$ img/c/$1$2.jpg [L]'."\n");