diff --git a/cps.py b/cps.py
index 21c9c7af..c36ed0fc 100755
--- a/cps.py
+++ b/cps.py
@@ -36,7 +36,11 @@ from cps.shelf import shelf
 from cps.admin import admi
 from cps.gdrive import gdrive
 from cps.editbooks import editbook
-from cps.oauth_bb import oauth
+try:
+    from cps.oauth_bb import oauth
+    oauth_available = True
+except ImportError:
+    oauth_available = False
 
 
 if __name__ == '__main__':
@@ -49,7 +53,8 @@ if __name__ == '__main__':
     app.register_blueprint(admi)
     app.register_blueprint(gdrive)
     app.register_blueprint(editbook)
-    app.register_blueprint(oauth)
+    if oauth_available:
+        app.register_blueprint(oauth)
     Server.startServer()
 
 
diff --git a/cps/about.py b/cps/about.py
index 6e82b964..69deb7db 100644
--- a/cps/about.py
+++ b/cps/about.py
@@ -23,7 +23,7 @@
 
 from flask import Blueprint
 from flask_login import login_required
-import db
+from cps import db
 import sys
 import uploader
 from babel import __version__ as babelVersion
diff --git a/cps/editbooks.py b/cps/editbooks.py
index c758bb18..c96ec942 100644
--- a/cps/editbooks.py
+++ b/cps/editbooks.py
@@ -26,7 +26,7 @@ from cps import config, language_table, get_locale, app, ub, global_WorkerThread
 from flask import request, flash, redirect, url_for, abort, Markup, Response
 from flask import Blueprint
 import datetime
-import db
+from cps import db
 import os
 import json
 from flask_babel import gettext as _
diff --git a/cps/helper.py b/cps/helper.py
index d780620b..1175f9f0 100644
--- a/cps/helper.py
+++ b/cps/helper.py
@@ -19,13 +19,12 @@
 #  along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 
-from cps import config, global_WorkerThread, get_locale
+from cps import config, global_WorkerThread, get_locale, db
 from flask import current_app as app
 from tempfile import gettempdir
 import sys
 import os
 import re
-import db
 import unicodedata
 import worker
 import time
diff --git a/cps/opds.py b/cps/opds.py
index 419cdea2..d73bc4e2 100644
--- a/cps/opds.py
+++ b/cps/opds.py
@@ -22,12 +22,11 @@
 #  along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 # opds routing functions
-from cps import config, mimetypes, app
+from cps import config, mimetypes, app, db
 from flask import request, render_template, Response, g, make_response
 from pagination import Pagination
 from flask import Blueprint
 import datetime
-import db
 import ub
 from flask_login import current_user
 from functools import wraps
diff --git a/cps/shelf.py b/cps/shelf.py
index 34d8eb47..109eff75 100644
--- a/cps/shelf.py
+++ b/cps/shelf.py
@@ -22,13 +22,11 @@
 #  along with this program. If not, see <http://www.gnu.org/licenses/>.
 
 from flask import Blueprint, request, flash, redirect, url_for
-from cps import ub, searched_ids
+from cps import ub, searched_ids, app, db
 from flask_babel import gettext as _
 from sqlalchemy.sql.expression import func, or_
 from flask_login import login_required, current_user
 from web import render_title_template
-from cps import app
-import db
 
 shelf = Blueprint('shelf', __name__)
 
diff --git a/cps/web.py b/cps/web.py
index c9720505..5eea12bd 100644
--- a/cps/web.py
+++ b/cps/web.py
@@ -40,10 +40,9 @@ import json
 import datetime
 from iso639 import languages as isoLanguages
 import re
-import db
 import gdriveutils
 from redirect import redirect_back
-from cps import lm, babel, ub, config, get_locale, language_table, app
+from cps import lm, babel, ub, config, get_locale, language_table, app, db
 from pagination import Pagination
 from sqlalchemy.sql.expression import text