diff --git a/src/main.c b/src/main.c
index 0cc194e..29268d6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -245,7 +245,7 @@ static void update_countdown_fsm(uint32_t time_ms)
 						&& (time_in_state > 3000)
 						&& ((time_ms - buttons_get_last_change_time(BTN_ON)) > 500)
 						&& ((time_ms - buttons_get_last_change_time(BTN_ON)) % 500 == 0))) {
-				if(m_countdown_off_time < 10 * ONE_MINUTE) {
+				if(countdown_time_remaining < 10 * ONE_MINUTE) {
 					m_countdown_off_time += 10 * ONE_MINUTE;
 				} else {
 					m_countdown_off_time += countdown_time_remaining; // double remaining time