diff --git a/FU.pm b/FU.pm
index 1451c74..d59f821 100644
--- a/FU.pm
+++ b/FU.pm
@@ -722,6 +722,7 @@ sub reset {
     $FU::REQ->{reshdr} = {
         'content-type', 'text/html',
     };
+    delete $FU::REQ->{rescookie};
 }