1 files changed, 2 insertions, 0 deletions
diff --git a/progs/tests/calibrate_rast.c b/progs/tests/calibrate_rast.c
index 37d8ac85e54..5d89ff79c55 100644
--- a/progs/tests/calibrate_rast.c
+++ b/progs/tests/calibrate_rast.c
@@ -19,6 +19,7 @@
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <GL/glew.h>
 #include <GL/glut.h>
 
 
@@ -386,6 +387,7 @@ main(int argc, char *argv[])
    glutInitWindowSize(Width, Height);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
    Win = glutCreateWindow(argv[0]);
+   glewInit();
    glutReshapeFunc(Reshape);
    glutKeyboardFunc(Key);
    glutDisplayFunc(Draw);