diff --git a/ambientd.c3 b/ambientd.c3
index 30253d5..4c7c0d4 100644
--- a/ambientd.c3
+++ b/ambientd.c3
@@ -171,8 +171,8 @@ fn int main()
 		{|
 			int brightness_now = read_int(ACTUAL_BRIGHTNESS_DEV) ?? brightness_adjusted;
 			if (brightness_now == brightness_adjusted) { return; }
-			int step = (brightness_adjusted-brightness_now)/(SMOOTH_SAMPLES-1);
-			for (int i; i < SMOOTH_SAMPLES-1; i++) {
+			int step = (brightness_adjusted-brightness_now)/(SMOOTH_SAMPLES);
+			for (int i; i < SMOOTH_SAMPLES; i++) {
 				write_brightness(brightness_now + step*i);
 				thread::sleep_ms(SMOOTH_DURATION/SMOOTH_SAMPLES);
 			}