diff --git a/rhodecode/api/views/pull_request_api.py b/rhodecode/api/views/pull_request_api.py
--- a/rhodecode/api/views/pull_request_api.py
+++ b/rhodecode/api/views/pull_request_api.py
@@ -924,7 +924,7 @@ def close_pull_request(
 
     # finally close the PR, with proper message comment
     comment, status = PullRequestModel().close_pull_request_with_comment(
-        pull_request, apiuser, repo, message=message)
+        pull_request, apiuser, repo, message=message, auth_user=apiuser)
     status_lbl = ChangesetStatus.get_status_lbl(status)
 
     Session().commit()
diff --git a/rhodecode/apps/repository/views/repo_pull_requests.py b/rhodecode/apps/repository/views/repo_pull_requests.py
--- a/rhodecode/apps/repository/views/repo_pull_requests.py
+++ b/rhodecode/apps/repository/views/repo_pull_requests.py
@@ -1195,7 +1195,8 @@ class RepoPullRequestsView(RepoAppView, 
                           'pull request %s', pull_request_id)
                 raise HTTPForbidden()
             comment, status = PullRequestModel().close_pull_request_with_comment(
-                pull_request, self._rhodecode_user, self.db_repo, message=text)
+                pull_request, self._rhodecode_user, self.db_repo, message=text,
+                auth_user=self._rhodecode_user)
             Session().flush()
             events.trigger(
                 events.PullRequestCommentEvent(pull_request, comment))
diff --git a/rhodecode/model/pull_request.py b/rhodecode/model/pull_request.py
--- a/rhodecode/model/pull_request.py
+++ b/rhodecode/model/pull_request.py
@@ -1174,7 +1174,7 @@ class PullRequestModel(BaseModel):
             'repo.pull_request.close', {'data': pr_data}, user, pull_request)
 
     def close_pull_request_with_comment(
-            self, pull_request, user, repo, message=None):
+            self, pull_request, user, repo, message=None, auth_user=None):
 
         pull_request_review_status = pull_request.calculated_review_status()
 
@@ -1198,7 +1198,8 @@ class PullRequestModel(BaseModel):
             pull_request=pull_request.pull_request_id,
             status_change=status_lbl,
             status_change_type=status,
-            closing_pr=True
+            closing_pr=True,
+            auth_user=auth_user,
         )
 
         # calculate old status before we change it