diff --git a/man2/io_submit.2 b/man2/io_submit.2
index 81e17d6c5..d3b1793fc 100644
--- a/man2/io_submit.2
+++ b/man2/io_submit.2
@@ -144,6 +144,7 @@ enum {
     IOCB_CMD_PWRITE = 1,
     IOCB_CMD_FSYNC = 2,
     IOCB_CMD_FDSYNC = 3,
+    IOCB_CMD_POLL = 5,
     IOCB_CMD_NOOP = 6,
     IOCB_CMD_PREADV = 7,
     IOCB_CMD_PWRITEV = 8,