1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 27218de7..c982d0b4 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -73,7 +73,7 @@ sub base_url {
          } else {
                  # either called from a non-PSGI environment (e.g. NNTP/POP3)
                  $self->{-base_url} ||= do {
-                        my $url = $self->{url};
+                        my $url = $self->{url} or return undef;
                          # expand protocol-relative URLs to HTTPS if we're
                          # not inside a web server
                          $url = "https:$url" if $url =~ m!\A//!;