diff --git a/include/sys/time_units.h b/include/sys/time_units.h
index 0ed0f8438ee..3b18aba69d6 100644
--- a/include/sys/time_units.h
+++ b/include/sys/time_units.h
@@ -96,7 +96,8 @@ static TIME_CONSTEXPR ALWAYS_INLINE uint64_t z_tmcvt(uint64_t t, uint32_t from_h
 
 		if (round_up) {
 			off = rdivisor - 1U;
-		} else if (round_off) {
+		}
+		if (round_off) {
 			off = rdivisor / 2U;
 		}
 	}