From d03e3d0faebb9e643efc7696ceb385b23a4881bf Mon Sep 17 00:00:00 2001
From: Lars-Dominik Braun <lars@6xq.net>
Date: Tue, 30 Sep 2014 16:50:10 +0200
Subject: Fix theoretical LED step edge case

---
 ui.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'ui.c')

diff --git a/ui.c b/ui.c
index ce98b32..aaf3c5b 100644
--- a/ui.c
+++ b/ui.c
@@ -210,7 +210,7 @@ static void doRun () {
 			speakerStart (SPEAKER_BEEP);
 			timerStop ();
 			timerStart (ALARM_TIME);
-		} else {
+		} else if (currLed > 0) {
 			/* one step */
 			--brightness[currLed];
 			pwmSet (horizonLed (currLed), brightness[currLed]);
-- 
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