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-rw-r--r--lib/PublicInbox/Spawn.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/Spawn.pm b/lib/PublicInbox/Spawn.pm
index e5c0b1e9..b03f2d59 100644
--- a/lib/PublicInbox/Spawn.pm
+++ b/lib/PublicInbox/Spawn.pm
@@ -209,7 +209,7 @@ my $fdpass = <<'FDPASS';
 #include <sys/socket.h>
 
 #if defined(CMSG_SPACE) && defined(CMSG_LEN)
-#define SEND_FD_CAPA 4
+#define SEND_FD_CAPA 5
 #define SEND_FD_SPACE (SEND_FD_CAPA * sizeof(int))
 union my_cmsg {
         struct cmsghdr hdr;