diff --git a/opac/opac-search.pl b/opac/opac-search.pl
index 7776d1c4ad..2dcb218dc7 100755
--- a/opac/opac-search.pl
+++ b/opac/opac-search.pl
@@ -539,7 +539,7 @@ if ( C4::Context->preference('OpacSuppression') ) {
         suppress                => $suppress,
         is_opac                 => 1,
         weighted_fields         => $weight_search,
-        weight_search_submitted => $cgi->param('weight_search_submitted')
+        weight_search_submitted => $cgi->param('weight_search_submitted') // undef
     }
     );