diff --git a/pupil_src/shared_modules/uvc_capture/mac_video/__init__.py b/pupil_src/shared_modules/uvc_capture/mac_video/__init__.py
index 070da90e6d..1def268c4b 100644
--- a/pupil_src/shared_modules/uvc_capture/mac_video/__init__.py
+++ b/pupil_src/shared_modules/uvc_capture/mac_video/__init__.py
@@ -246,6 +246,7 @@ def create_atb_bar(self,pos):
         cameras_enum = atb.enum("Capture",dict([(c.name,c.src_id) for c in Camera_List()]) )
 
         self.bar.add_var("Capture",vtype=cameras_enum,getter=lambda:self.src_id, setter=self.re_init_cam_by_src_id)
+        self.bar.add_var('hardware timestamps',vtype=atb.TW_TYPE_BOOL8,getter=lambda:False)
         for control in sorted_controls:
             name = control.atb_name
             if control.type=="bool":