diff --git a/src/vrend_renderer.c b/src/vrend_renderer.c
index 9e52ac3..a4a1642 100644
--- a/src/vrend_renderer.c
+++ b/src/vrend_renderer.c
@@ -27,6 +27,7 @@
 
 #include <epoxy/gl.h>
 
+#include <unistd.h>
 #include <stdio.h>
 #include <errno.h>
 #include "pipe/p_shader_tokens.h"