diff --git a/progs/xdemos/glxgears.c b/progs/xdemos/glxgears.c
index 088f25a..2993c82 100644
--- a/progs/xdemos/glxgears.c
+++ b/progs/xdemos/glxgears.c
@@ -771,6 +771,7 @@
    glDeleteLists(gear1, 1);
    glDeleteLists(gear2, 1);
    glDeleteLists(gear3, 1);
+   glXMakeCurrent(dpy, None, NULL);
    glXDestroyContext(dpy, ctx);
    XDestroyWindow(dpy, win);
    XCloseDisplay(dpy);