diff --git a/src/ui/timesel.c b/src/ui/timesel.c
index 253a0a8..fcc1099 100644
--- a/src/ui/timesel.c
+++ b/src/ui/timesel.c
@@ -171,6 +171,7 @@ TimeSelState time_sel_dispatch(TimeSelection *ts, SensorState *state,
 void time_sel_reset(TimeSelection *ts) {
     ts->hour = 0;
     ts->minute = 0;
+    ts->second = 0;
     ts->stage = TS_STAGE_HOUR;
 }