diff --git a/sys/pc98/pc98/syscons.c b/sys/pc98/pc98/syscons.c
index c68e61a78f4b..b7ede40068f1 100644
--- a/sys/pc98/pc98/syscons.c
+++ b/sys/pc98/pc98/syscons.c
@@ -2975,7 +2975,8 @@ next_code:
     if (!(c & RELKEY))
 	sc_touch_scrn_saver();
 
-    random_harvest(&c, sizeof(c), 1, 0, RANDOM_KEYBOARD);
+    if (!(flags & SCGETC_CN))
+	random_harvest(&c, sizeof(c), 1, 0, RANDOM_KEYBOARD);
 
     if (scp->kbd_mode != K_XLATE)
 	return KEYCHAR(c);