diff --git a/bgl_babylon.cc b/bgl_babylon.cc
index caabc95a..3842accd 100644
--- a/bgl_babylon.cc
+++ b/bgl_babylon.cc
@@ -23,6 +23,7 @@
 
 #include "bgl_babylon.hh"
 #include <algorithm>
+#include <cerrno>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>