--- freem/src/service.c	2025/02/25 18:55:13	1.3
+++ freem/src/service.c	2025/02/28 20:06:07	1.4
@@ -3368,7 +3368,7 @@ void write_t (short int col)
 
 }					/* end of write_t() */
 
-void ontimo ()
+void ontimo (void)
 {					/* handle timeout (for read) */
     longjmp (sjbuf, 1);
 }					/* end of ontimo() */