diff --git a/opac/opac-search.pl b/opac/opac-search.pl
index cec7a9989c..7fdabf8f59 100755
--- a/opac/opac-search.pl
+++ b/opac/opac-search.pl
@@ -369,7 +369,7 @@ for (keys %$params) {
     my @pasarParam = $cgi->multi_param($_);
     for my $paramValue(@pasarParam) {
         $pasarParams .= '&' if ($j > 0);
-        $pasarParams .= $_ . '=' . uri_escape_utf8($paramValue);
+        $pasarParams .= uri_escape_utf8($_) . '=' . uri_escape_utf8($paramValue);
         $j++;
     }
 }