diff --git a/src/os/unix/ngx_freebsd.h b/src/os/unix/ngx_freebsd.h
index f666a6f..cfafecf 100644
--- a/src/os/unix/ngx_freebsd.h
+++ b/src/os/unix/ngx_freebsd.h
@@ -2,7 +2,8 @@
 #define _NGX_FREEBSD_H_INCLUDED_
 
 
-ngx_chain_t *ngx_freebsd_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in);
+ngx_chain_t *ngx_freebsd_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in,
+                                        off_t limit);
 
 
 extern int ngx_freebsd_kern_osreldate;