diff --git a/examples/heightmap.c b/examples/heightmap.c
index 75a694e9..e926581a 100644
--- a/examples/heightmap.c
+++ b/examples/heightmap.c
@@ -32,8 +32,6 @@
 #include <stddef.h>
 #include "getopt.h"
 
-
-#define GLFW_NO_GLU 1
 #include <GL/glfw3.h>
 #include <GL/glext.h>