diff --git a/progit/lib/model.py b/progit/lib/model.py
index ebd693f..5717fde 100644
--- a/progit/lib/model.py
+++ b/progit/lib/model.py
@@ -48,9 +48,9 @@ def create_tables(db_url, alembic_ini=None, debug=False):
     from progit.ui.plugins import get_plugin_tables
     get_plugin_tables()
     BASE.metadata.create_all(engine)
-    #engine.execute(collection_package_create_view(driver=engine.driver))
+    # engine.execute(collection_package_create_view(driver=engine.driver))
     if db_url.startswith('sqlite:'):
-        ## Ignore the warning about con_record
+        # Ignore the warning about con_record
         # pylint: disable=W0613
         def _fk_pragma_on_connect(dbapi_con, con_record):
             ''' Tries to enforce referential constraints on sqlite. '''
@@ -61,7 +61,7 @@ def create_tables(db_url, alembic_ini=None, debug=False):
         # then, load the Alembic configuration and generate the
         # version table, "stamping" it with the most recent rev:
 
-        ## Ignore the warning missing alembic
+        # Ignore the warning missing alembic
         # pylint: disable=F0401
         from alembic.config import Config
         from alembic import command
@@ -86,7 +86,7 @@ def create_default_status(session):
         session.add(ticket_stat)
         try:
             session.flush()
-        except SQLAlchemyError, err:
+        except SQLAlchemyError, err:  # pragma: no cover
             ERROR_LOG.debug('Status %s could not be added', ticket_stat)
 
     session.commit()
@@ -202,11 +202,13 @@ class Project(BASE):
     user = relation('User', foreign_keys=[user_id],
                     remote_side=[User.id], backref='projects')
 
-    users = relation('User',
+    users = relation(
+        'User',
         secondary="user_projects",
         primaryjoin="projects.c.id==user_projects.c.project_id",
         secondaryjoin="users.c.id==user_projects.c.user_id",
-        backref='co_projects')
+        backref='co_projects'
+    )
 
     @property
     def path(self):