--- cal2ct.c.orig	Wed Sep 30 11:44:27 1998
+++ cal2ct.c	Wed Sep 30 11:45:06 1998
@@ -71,7 +71,7 @@
 #endif
 #endif
 
-void
+int
 main(argc, argv)
 int argc;
 char *argv[];
@@ -136,6 +136,7 @@
 		exit(1);
 	}
 	write_ct_file();
+	return 0;
 }
 
 /*