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-rw-r--r--pttbbs/mbbsd/admin.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/pttbbs/mbbsd/admin.c b/pttbbs/mbbsd/admin.c
index 30f0ea91..959b3e8b 100644
--- a/pttbbs/mbbsd/admin.c
+++ b/pttbbs/mbbsd/admin.c
@@ -572,7 +572,7 @@ m_mod_board(char *bname)
getdata(21, 0, "½T©w§ó§ï¡H", genbuf, 5, LCECHO);
if (genbuf[0] == 'y') {
if (newbh.brdattr & BRD_NOCREDIT)
- newbh.brdattr = newbh.brdattr & (!BRD_NOCREDIT);
+ newbh.brdattr = newbh.brdattr & (~BRD_NOCREDIT);
else
newbh.brdattr = newbh.brdattr | BRD_NOCREDIT;
assert(0<=bid-1 && bid-1<MAX_BOARD);