diff --git a/man2/epoll_ctl.2 b/man2/epoll_ctl.2
index abcf88df2..8972ad03f 100644
--- a/man2/epoll_ctl.2
+++ b/man2/epoll_ctl.2
@@ -166,6 +166,8 @@ is set appropriately.
 .TP
 .B EBADF
 .I epfd
+or
+.I fd
 is not a valid file descriptor.
 .TP
 .B EEXIST