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-rw-r--r--lib/PublicInbox/NewsWWW.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/NewsWWW.pm b/lib/PublicInbox/NewsWWW.pm
index 8626cf96..80bb4886 100644
--- a/lib/PublicInbox/NewsWWW.pm
+++ b/lib/PublicInbox/NewsWWW.pm
@@ -47,7 +47,7 @@ sub call {
         if (my $ibx = $pi_config->lookup_newsgroup($ng)) {
                 my $url = PublicInbox::Hval::prurl($env, $ibx->{url});
                 my $code = 301;
-                if (defined $article && $article =~ /\A\d+\z/) {
+                if (defined $article && $article =~ /\A[0-9]+\z/) {
                         my $mid = eval { $ibx->mm->mid_for($article) };
                         if (defined $mid) {
                                 # article IDs are not stable across clones,