diff --git a/include/GL/glfw3.h b/include/GL/glfw3.h
index ceb3df76..6fd41cae 100644
--- a/include/GL/glfw3.h
+++ b/include/GL/glfw3.h
@@ -173,10 +173,6 @@ extern "C" {
   #endif
 #endif
 
-/* This is needed for the declaration of size_t.
- */
-#include <stddef.h>
-
 
 /*************************************************************************
  * GLFW version