1 files changed, 2 insertions, 1 deletions
diff --git a/progs/tests/zdrawpix.c b/progs/tests/zdrawpix.c
index dd222e7dd0b..ba7da571ebf 100644
--- a/progs/tests/zdrawpix.c
+++ b/progs/tests/zdrawpix.c
@@ -10,10 +10,10 @@
  * Press 'd' to view the Z buffer as a grayscale image.
  */
 
-#define GL_GLEXT_PROTOTYPES
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
+#include <GL/glew.h>
 #include <GL/glut.h>
 #include "../util/showbuffer.c"
 
@@ -180,6 +180,7 @@ main(int argc, char *argv[])
    glutInitWindowSize(400, 400);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
    Win = glutCreateWindow(argv[0]);
+   glewInit();
    glutReshapeFunc(Reshape);
    glutKeyboardFunc(Key);
    glutSpecialFunc(SpecialKey);