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-rw-r--r--lib/PublicInbox/LeiInput.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/LeiInput.pm b/lib/PublicInbox/LeiInput.pm
index 84fc579d..a1dcc907 100644
--- a/lib/PublicInbox/LeiInput.pm
+++ b/lib/PublicInbox/LeiInput.pm
@@ -30,7 +30,7 @@ my %ERR = (
                 my ($label) = @_;
                 length($label) >= $L_MAX and
                         return "`$label' too long (must be <= $L_MAX)";
-                $label =~ m{\A[a-z0-9_](?:[a-z0-9_\-\./\@,]*[a-z0-9])?\z}i ?
+                $label =~ m{\A[a-z0-9_](?:[a-z0-9_\-\./\@,]*[a-z0-9])?\z} ?
                         undef : "`$label' is invalid";
         },
         kw => sub {