1 files changed, 2 insertions, 1 deletions
diff --git a/lib/PublicInbox/HTTP.pm b/lib/PublicInbox/HTTP.pm
index 3530f8ba..8ba41ba5 100644
--- a/lib/PublicInbox/HTTP.pm
+++ b/lib/PublicInbox/HTTP.pm
@@ -241,6 +241,7 @@ sub response_done_cb ($$) {
          sub {
                  my $env = $self->{env};
                  $self->{env} = undef;
+                %$env = () if $env; # prevent circular references
                  $self->write("0\r\n\r\n") if $alive == 2;
                  $self->write(sub{$alive ? next_request($self) : $self->close});
          }
@@ -472,7 +473,7 @@ sub close {
          my $self = shift;
          my $forward = $self->{forward};
          my $env = $self->{env};
-        delete $env->{'psgix.io'} if $env; # prevent circular references
+        %$env = () if $env; # prevent circular references
          $self->{pull} = $self->{forward} = $self->{env} = undef;
          if ($forward) {
                  eval { $forward->close };