diff --git a/src/unix/fs.c b/src/unix/fs.c
index 9dab202dd..eb8d14992 100644
--- a/src/unix/fs.c
+++ b/src/unix/fs.c
@@ -545,7 +545,7 @@ static ssize_t uv__fs_sendfile(uv_fs_t* req) {
 
     return -1;
   }
-#elif defined(__FreeBSD__) || defined(__APPLE__)
+#elif defined(__FreeBSD__) || defined(__APPLE__) || defined(__DragonFly__)
   {
     off_t len;
     ssize_t r;
@@ -555,7 +555,7 @@ static ssize_t uv__fs_sendfile(uv_fs_t* req) {
      * number of bytes have been sent, we don't consider it an error.
      */
 
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
     len = 0;
     r = sendfile(in_fd, out_fd, req->off, req->bufsml[0].len, NULL, &len, 0);
 #else