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-rw-r--r--erts/emulator/sys/common/erl_poll.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c
index 556e8d05ad..dffcf68df5 100644
--- a/erts/emulator/sys/common/erl_poll.c
+++ b/erts/emulator/sys/common/erl_poll.c
@@ -1335,7 +1335,7 @@ static int update_pollset(ErtsPollSet ps, int fd)
{
ErtsPollEvents events = ps->fds_status[fd].events;
#ifdef _DARWIN_UNLIMITED_SELECT
- if (FDS_SIZE(fd) > ps->select_fds_len)
+ if (FDS_SIZE(fd+1) > ps->select_fds_len)
grow_select_fds(ps, fd);
#endif
if ((ERTS_POLL_EV_IN & events)