diff --git a/kallithea/controllers/pullrequests.py b/kallithea/controllers/pullrequests.py
--- a/kallithea/controllers/pullrequests.py
+++ b/kallithea/controllers/pullrequests.py
@@ -182,8 +182,11 @@ class PullrequestsController(BaseRepoCon
             return False
 
         owner = self.authuser.user_id == pull_request.user_id
-        reviewer = self.authuser.user_id in [x.user_id for x in
-                                                   pull_request.reviewers]
+        reviewer = PullRequestReviewers.query() \
+            .filter(PullRequestReviewers.pull_request == pull_request) \
+            .filter(PullRequestReviewers.user_id == self.authuser.user_id) \
+            .count() != 0
+
         return self.authuser.admin or owner or reviewer
 
     @LoginRequired()
diff --git a/kallithea/model/changeset_status.py b/kallithea/model/changeset_status.py
--- a/kallithea/model/changeset_status.py
+++ b/kallithea/model/changeset_status.py
@@ -98,14 +98,14 @@ class ChangesetStatusModel(BaseModel):
         pull_request_reviewers = []
         pull_request_pending_reviewers = []
         relevant_statuses = []
-        for r in pull_request.reviewers:
-            st = cs_statuses.get(r.user.username)
+        for user in pull_request.get_reviewer_users():
+            st = cs_statuses.get(user.username)
             relevant_statuses.append(st)
             if not st or st.status in (ChangesetStatus.STATUS_NOT_REVIEWED,
                                        ChangesetStatus.STATUS_UNDER_REVIEW):
                 st = None
-                pull_request_pending_reviewers.append(r.user)
-            pull_request_reviewers.append((r.user, st))
+                pull_request_pending_reviewers.append(user)
+            pull_request_reviewers.append((user, st))
 
         result = self._calculate_status(relevant_statuses)
 
diff --git a/kallithea/model/comment.py b/kallithea/model/comment.py
--- a/kallithea/model/comment.py
+++ b/kallithea/model/comment.py
@@ -139,7 +139,7 @@ class ChangesetCommentsModel(BaseModel):
             recipients += [pull_request.owner]
 
             # add the reviewers to notification
-            recipients += [x.user for x in pull_request.reviewers]
+            recipients += pull_request.get_reviewer_users()
 
             #set some variables for email notification
             email_kwargs = {
diff --git a/kallithea/model/db.py b/kallithea/model/db.py
--- a/kallithea/model/db.py
+++ b/kallithea/model/db.py
@@ -2322,6 +2322,14 @@ class PullRequest(Base, BaseModel):
     comments = relationship('ChangesetComment', order_by='ChangesetComment.comment_id',
                              cascade="all, delete-orphan")
 
+    def get_reviewer_users(self):
+        """Like .reviewers, but actually returning the users"""
+        return User.query() \
+            .join(PullRequestReviewers) \
+            .filter(PullRequestReviewers.pull_request == self) \
+            .order_by(PullRequestReviewers.pull_requests_reviewers_id) \
+            .all()
+
     def is_closed(self):
         return self.status == self.STATUS_CLOSED