diff --git a/subsys/logging/log_output.c b/subsys/logging/log_output.c
index b1173a97c22..2d0a6a978cb 100644
--- a/subsys/logging/log_output.c
+++ b/subsys/logging/log_output.c
@@ -194,7 +194,7 @@ static void __attribute__((unused)) get_YMD_from_seconds(uint64_t seconds,
 		output_date->year++;
 	}
 	/* compute the proper month */
-	for (i = 0; i < sizeof(days_in_month); i++) {
+	for (i = 0; i < ARRAY_SIZE(days_in_month); i++) {
 		tmp = ((i == 1) && is_leap_year(output_date->year)) ?
 					(days_in_month[i] + 1) * SECONDS_IN_DAY :
 					days_in_month[i] * SECONDS_IN_DAY;