diff --git a/progress/views.py b/progress/views.py
index 73bfc08..037e05f 100644
--- a/progress/views.py
+++ b/progress/views.py
@@ -165,10 +165,9 @@ class StudentUpdateProgress(APIView):
                 )
 
                 if not pv.status == ProgressLesson.STATUSES.wait:
-                    if pv.checker == p.teacher:
+                    if pv.checker == p.teacher and not comment is None:
                         pv.status = ProgressLesson.STATUSES.wait
-                        if not comment is None:
-                            pv.comment_tokens.append(comment)
+                        pv.comment_tokens.append(comment)
 
                     elif pv.checker == p.user:
                         pv.status = ProgressLesson.STATUSES.done