diff --git a/usr.bin/ncal/ncal.c b/usr.bin/ncal/ncal.c
index 48b8c1ae0f56..5a5cbc3553ab 100644
--- a/usr.bin/ncal/ncal.c
+++ b/usr.bin/ncal/ncal.c
@@ -642,8 +642,8 @@ monthrangeb(int y, int m, int jd_flag, int before, int after)
 				wprintf(L"%-*ls  ",
 				    mw, wcenter(ws, year[i].name, mw));
 			else {
-				swprintf(ws, sizeof(ws), L"%-ls %d",
-				    year[i].name, M2Y(m + i));
+				swprintf(ws, sizeof(ws)/sizeof(ws[0]),
+				    L"%-ls %d", year[i].name, M2Y(m + i));
 				wprintf(L"%-*ls  ", mw, wcenter(ws1, ws, mw));
 			}
 		printf("\n");
@@ -958,7 +958,7 @@ mkweekdays(struct weekdays *wds)
 
 	for (i = 0; i != 7; i++) {
 		tm.tm_wday = (i+1) % 7;
-		wcsftime(buf, sizeof(buf), L"%a", &tm);
+		wcsftime(buf, sizeof(buf)/sizeof(buf[0]), L"%a", &tm);
 		for (len = 2; len > 0; --len) {
 			if ((width = wcswidth(buf, len)) <= 2)
 				break;