1 files changed, 2 insertions, 1 deletions
diff --git a/progs/tests/ext422square.c b/progs/tests/ext422square.c
index 6533514d697..89e99f02926 100644
--- a/progs/tests/ext422square.c
+++ b/progs/tests/ext422square.c
@@ -12,7 +12,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#define GL_GLEXT_PROTOTYPES
+#include <GL/glew.h>
 #include <GL/glut.h>
 #include <assert.h>
 
@@ -249,6 +249,7 @@ int main( int argc, char *argv[] )
    glutInitWindowPosition( 0, 0 );
    glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
    glutCreateWindow(argv[0] );
+   glewInit();
    glutReshapeFunc( Reshape );
    glutKeyboardFunc( Key );
    glutSpecialFunc( SpecialKey );