diff --git a/src/others/observer/lv_observer.c b/src/others/observer/lv_observer.c
index 67e54716f0..0822521e28 100644
--- a/src/others/observer/lv_observer.c
+++ b/src/others/observer/lv_observer.c
@@ -538,7 +538,7 @@ lv_observer_t * lv_obj_bind_state_if_le(lv_obj_t * obj, lv_subject_t * subject,
 
 lv_observer_t * lv_obj_bind_checked(lv_obj_t * obj, lv_subject_t * subject)
 {
-    lv_observer_t * observable = bind_to_bitfield(subject, obj, obj_state_observer_cb, LV_STATE_CHECKED, 1, false,
+    lv_observer_t * observable = bind_to_bitfield(subject, obj, obj_state_observer_cb, LV_STATE_CHECKED, 0, true,
                                                   FLAG_COND_EQ);
     lv_obj_add_event_cb(obj, obj_value_changed_event_cb, LV_EVENT_VALUE_CHANGED, subject);
     return observable;