diff --git a/lib/libc/sys/rfork.2 b/lib/libc/sys/rfork.2
index 4a541497c3ef..5e57f1ff31f0 100644
--- a/lib/libc/sys/rfork.2
+++ b/lib/libc/sys/rfork.2
@@ -79,7 +79,7 @@ will sleep, if necessary, until required process resources are available.
 .Pp
 .Fn Fork
 can be implemented as a call to
-.Fn rfork "RFFDG|RFPROC"
+.Fn rfork "RFFDG | RFPROC"
 but isn't for backwards compatibility.
 .Sh RETURN VALUES
 Upon successful completion,