diff --git a/vroom b/vroom
index ac80b01..8cf1123 100755
--- a/vroom
+++ b/vroom
@@ -1966,10 +1966,10 @@ any '/api' => sub {
     # Room persistence can only be set by admins
     if ($req->{param}->{persistent} ne '' &&
         $self->key_can_do_this({token => $token, action => 'set_persistent'})){
-      $room->{persistent} = ($req->{param}->{persistent} eq Mojo::JSON::true) ? '1' : '0';
+      $room->{persistent} = ($req->{param}->{persistent}) ? '1' : '0';
     }
     foreach my $pass (qw/join_password owner_password/){
-      if ($req->{param}->{$pass} eq Mojo::JSON::false){
+      if ($req->{param}->{$pass} eq "\0"){
         $room->{$pass} = undef;
       }
       elsif ($req->{param}->{$pass} ne ''){