--- ray/src/px/oki20c.c	1989/02/02 10:49:21	1.1
+++ ray/src/px/oki20c.c	1989/09/12 13:04:20	1.2
@@ -58,7 +58,7 @@ char  *fname;
 				/* discard header */
 	getheader(input, NULL);
 				/* get picture dimensions */
-	if (fscanf(input, "-Y %d +X %d\n", &yres, &xres) != 2) {
+	if (fgetresolu(&xres, &yres, input) != (YMAJOR|YDECR)) {
 		fprintf(stderr, "%s: bad picture size\n", fname);
 		return(-1);
 	}