$NetBSD$

--- graphics/canvas.c.orig	1994-05-02 14:34:56.000000000 -0600
+++ graphics/canvas.c
@@ -1330,7 +1330,7 @@ int scrollx, scrolly;
     tmp->fg=colors[fg];
     tmp->bg=colors[bg];
     sa.background_pixel=tmp->bg;
-    XChangeWindowAttributes(tmp->xdpy, tmp->win, CWBackPixel, sa);
+    XChangeWindowAttributes(tmp->xdpy, tmp->win, CWBackPixel, &sa);
     tmp->magx=1;
     tmp->magy=1;
     tmp->xpos=0;
