diff --git a/src/c/main.c b/src/c/main.c
index 34212ec..170f191 100644
--- a/src/c/main.c
+++ b/src/c/main.c
@@ -379,7 +379,7 @@ static void init() {
 
 	// get sleep time (UNIX timestamp)
 	time_t end = time(NULL);
-	time_t start = end - (SECONDS_PER_DAY * 1.5);
+	time_t start = end - (SECONDS_PER_DAY * 2);
 	if (health_service_any_activity_accessible(HealthActivitySleep, start, end) == HealthServiceAccessibilityMaskAvailable) {
 		s_sleep_data_accessible = true;
 		update_sleep_time(start, end);