diff --git a/pagure/templates/pull_request.html b/pagure/templates/pull_request.html
index 49d650f..4a31c60 100644
--- a/pagure/templates/pull_request.html
+++ b/pagure/templates/pull_request.html
@@ -297,7 +297,7 @@
                   commit=patch_new_id,
                   prequest=pull_request,
                   index=loop.index,
-                  tree=diff_commits[0].tree.id)}}
+                  tree_id=diff_commits[0].tree.id)}}
       {% endautoescape %}
 
       </div>
diff --git a/pagure/ui/filters.py b/pagure/ui/filters.py
index 418f653..1f877db 100644
--- a/pagure/ui/filters.py
+++ b/pagure/ui/filters.py
@@ -52,7 +52,7 @@ def format_ts(string):
 
 
 @APP.template_filter('format_loc')
-def format_loc(loc, commit=None, filename=None, tree=None, prequest=None,
+def format_loc(loc, commit=None, filename=None, tree_id=None, prequest=None,
                index=None):
     """ Template filter putting the provided lines of code into a table
     """
@@ -90,7 +90,7 @@ def format_loc(loc, commit=None, filename=None, tree=None, prequest=None,
                 '<a id="%(cnt)s" href="#%(cnt)s" data-line-number="%(cnt_lbl)s"></a></td>'
                 '<td class="prc" data-row="%(cnt_lbl)s"'
                 ' data-filename="%(filename)s" data-commit="%(commit)s"'
-                ' data-tree="%(tree)s">'
+                ' data-tree="%(tree_id)s">'
                 '<p>'
                 '<span class="oi prc_img" data-glyph="comment-square" alt="Add comment" title="Add comment"></span>'
                 '</p>'
@@ -101,7 +101,7 @@ def format_loc(loc, commit=None, filename=None, tree=None, prequest=None,
                         'img': flask.url_for('static', filename='users.png'),
                         'filename': filename,
                         'commit': commit,
-                        'tree': tree,
+                        'tree_id': tree_id,
                     }
                 )
             )