diff --git a/src/octoprint/server/api/printer.py b/src/octoprint/server/api/printer.py
index f93174e9..f544b833 100644
--- a/src/octoprint/server/api/printer.py
+++ b/src/octoprint/server/api/printer.py
@@ -6,7 +6,7 @@ __license__ = 'GNU Affero General Public License http://www.gnu.org/licenses/agp
 __copyright__ = "Copyright (C) 2014 The OctoPrint Project - Released under terms of the AGPLv3 License"
 
 from flask import request, jsonify, make_response, Response
-from flask.exceptions import BadRequest
+from werkzeug.exceptions import BadRequest
 import re
 
 from octoprint.settings import settings, valid_boolean_trues
diff --git a/src/octoprint/server/api/printer_profiles.py b/src/octoprint/server/api/printer_profiles.py
index 5c8ecc9d..11168c95 100644
--- a/src/octoprint/server/api/printer_profiles.py
+++ b/src/octoprint/server/api/printer_profiles.py
@@ -9,7 +9,7 @@ __copyright__ = "Copyright (C) 2014 The OctoPrint Project - Released under terms
 import copy
 
 from flask import jsonify, make_response, request, url_for
-from flask.exceptions import BadRequest
+from werkzeug.exceptions import BadRequest
 
 from octoprint.server.api import api, NO_CONTENT
 from octoprint.server.util.flask import restricted_access
diff --git a/src/octoprint/server/api/settings.py b/src/octoprint/server/api/settings.py
index 4c24cb2b..2e9d213d 100644
--- a/src/octoprint/server/api/settings.py
+++ b/src/octoprint/server/api/settings.py
@@ -8,7 +8,7 @@ __copyright__ = "Copyright (C) 2014 The OctoPrint Project - Released under terms
 import logging
 
 from flask import request, jsonify, make_response
-from flask.exceptions import BadRequest
+from werkzeug.exceptions import BadRequest
 
 from octoprint.events import eventManager, Events
 from octoprint.settings import settings
diff --git a/src/octoprint/server/api/slicing.py b/src/octoprint/server/api/slicing.py
index 491fd1c1..d2b25466 100644
--- a/src/octoprint/server/api/slicing.py
+++ b/src/octoprint/server/api/slicing.py
@@ -6,7 +6,7 @@ __license__ = 'GNU Affero General Public License http://www.gnu.org/licenses/agp
 __copyright__ = "Copyright (C) 2014 The OctoPrint Project - Released under terms of the AGPLv3 License"
 
 from flask import request, jsonify, make_response, url_for
-from flask.exceptions import BadRequest
+from werkzeug.exceptions import BadRequest
 
 from octoprint.server import slicingManager
 from octoprint.server.util.flask import restricted_access
diff --git a/src/octoprint/server/api/users.py b/src/octoprint/server/api/users.py
index 505d852c..19472d95 100644
--- a/src/octoprint/server/api/users.py
+++ b/src/octoprint/server/api/users.py
@@ -6,7 +6,7 @@ __license__ = 'GNU Affero General Public License http://www.gnu.org/licenses/agp
 __copyright__ = "Copyright (C) 2014 The OctoPrint Project - Released under terms of the AGPLv3 License"
 
 from flask import request, jsonify, abort, make_response
-from flask.exceptions import BadRequest
+from werkzeug.exceptions import BadRequest
 from flask.ext.login import current_user
 
 import octoprint.users as users