diff --git a/include/bbcode.php b/include/bbcode.php
index 6d56587ab1..ebafc353a4 100644
--- a/include/bbcode.php
+++ b/include/bbcode.php
@@ -146,7 +146,7 @@ function cleancss($input) {
 		if (($char >= "a") and ($char <= "z"))
 			$cleaned .= $char;
 
-		if (!(strpos(" #;:0123456789-_", $char) === false))
+		if (!(strpos(" #;:0123456789-_.%", $char) === false))
 			$cleaned .= $char;
 	}