1 files changed, 3 insertions, 0 deletions
diff --git a/progs/glsl/convolutions.c b/progs/glsl/convolutions.c
index ac71c68235..22ce7edcdc 100644
--- a/progs/glsl/convolutions.c
+++ b/progs/glsl/convolutions.c
@@ -5,6 +5,8 @@
  * Author: Zack Rusin
  */
 
+#include <GL/glew.h>
+
 #define GL_GLEXT_PROTOTYPES
 #include "readtex.h"
 
@@ -455,6 +457,7 @@ int main(int argc, char **argv)
       exit(1);
    }
 
+   glewInit();
    init();
 
    glutReshapeFunc(reshape);