diff --git a/vlib/x/vweb/sendfile_linux.c.v b/vlib/x/vweb/sendfile_linux.c.v
index 22508bead0..19d3e9e4f1 100644
--- a/vlib/x/vweb/sendfile_linux.c.v
+++ b/vlib/x/vweb/sendfile_linux.c.v
@@ -1,5 +1,7 @@
 module vweb
 
+#include <sys/sendfile.h>
+
 fn C.sendfile(out_fd int, in_fd int, offset voidptr, count int) int
 
 fn sendfile(out_fd int, in_fd int, nr_bytes int) int {