diff --git a/progs/demos/pointblast.c b/progs/demos/pointblast.c
index 72e51bc..14e9cf3 100644
--- a/progs/demos/pointblast.c
+++ b/progs/demos/pointblast.c
@@ -423,6 +423,8 @@
   int i;
   glutInit(&argc, argv);
   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH | GLUT_MULTISAMPLE);
+  glutInitWindowPosition(0, 0);
+  glutInitWindowSize(300, 300);
 
   for (i=1; i<argc; i++) {
     if(!strcmp("-noms", argv[i])) {