diff --git a/pagure/lib/model.py b/pagure/lib/model.py
index bcb02dd..9d97ee8 100644
--- a/pagure/lib/model.py
+++ b/pagure/lib/model.py
@@ -288,6 +288,7 @@ class Project(BASE):
             'issue_tracker': True,
             'project_documentation': True,
             'pull_requests': True,
+            'Only_assignee_can_close_pull-request': False,
         }
 
         if self._settings:
diff --git a/pagure/ui/fork.py b/pagure/ui/fork.py
index 2f97be5..ec79394 100644
--- a/pagure/ui/fork.py
+++ b/pagure/ui/fork.py
@@ -412,6 +412,19 @@ def merge_request_pull(repo, requestid, username=None):
             403,
             'You are not allowed to merge pull-request for this project')
 
+    if repo.settings.get('Only_assignee_can_close_pull-request', False):
+        if not request.assignee:
+            flask.flash(
+                'This request must be assigned to be merged', 'error')
+            return flask.redirect(flask.url_for(
+                'request_pull', username=username,
+                repo=repo.name, requestid=requestid))
+        if request.assignee.username != flask.g.fas_user.username:
+            flask.flash('Only the assignee can merge this review', 'error')
+            return flask.redirect(flask.url_for(
+                'request_pull', username=username,
+                repo=repo.name, requestid=requestid))
+
     error_output = flask.url_for(
         'request_pull', repo=repo.name, requestid=requestid)
     if username: