diff --git a/share/man/man9/sf_buf.9 b/share/man/man9/sf_buf.9
index a73ef452b07e..8d73937c2878 100644
--- a/share/man/man9/sf_buf.9
+++ b/share/man/man9/sf_buf.9
@@ -133,6 +133,7 @@ cache referenced by mbuf external storage for
 .Xr sendfile 2 ,
 .Xr vm_page_wire 9
 .Sh AUTHORS
+.An -nosplit
 The
 .Vt "struct sf_buf"
 API was designed and implemented by