diff --git a/progs/trivial/point-param.c b/progs/trivial/point-param.c
index c5424682b85..520bca9ea2d 100644
--- a/progs/trivial/point-param.c
+++ b/progs/trivial/point-param.c
@@ -22,6 +22,7 @@
  * OF THIS SOFTWARE.
  */
 
+#define GL_GLEXT_PROTOTYPES
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>