diff --git a/common.php b/common.php
index ff2cfeed6..85507b17d 100644
--- a/common.php
+++ b/common.php
@@ -228,7 +228,7 @@ $qstr = '';
 if (isset($_REQUEST['sca']))  {
     $sca = clean_xss_tags(trim($_REQUEST['sca']));
     if ($sca) {
-        $sca = preg_replace("/[\<\>\'\"\\\'\\\"\%\=\(\)\s]/", "", $sca);
+        $sca = preg_replace("/[\<\>\'\"\\\'\\\"\%\=\(\)]/", "", $sca);
         $qstr .= '&amp;sca=' . urlencode($sca);
     }
 } else {