diff --git a/man2/fcntl.2 b/man2/fcntl.2
index 625bcf456..f49c2d96a 100644
--- a/man2/fcntl.2
+++ b/man2/fcntl.2
@@ -1501,6 +1501,15 @@ or
 and the file descriptor open mode doesn't match with the
 type of lock requested.
 .TP
+.BR EBUSY
+.I cmd
+is
+.BR F_SETPIPE_SZ
+and the new pipe capacity specified in
+.I arg
+is smaller than the amount of buffer space currently
+used to store data in the pipe.
+.TP
 .B EBUSY
 .I cmd
 is