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-rw-r--r--lib/PublicInbox/MID.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/MID.pm b/lib/PublicInbox/MID.pm
index 369bb034..5aeffb8c 100644
--- a/lib/PublicInbox/MID.pm
+++ b/lib/PublicInbox/MID.pm
@@ -125,7 +125,7 @@ sub uniq_mids ($;$) {
 }
 
 # RFC3986, section 3.3:
-sub MID_ESC () { '^A-Za-z0-9\-\._~!\$\&\';\(\)\*\+,;=:@' }
+sub MID_ESC () { '^A-Za-z0-9\-\._~!\$\&\'\(\)\*\+,;=:@' }
 sub mid_escape ($) { uri_escape_utf8($_[0], MID_ESC) }
 
 1;