diff --git a/excalibur/configuration.py b/excalibur/configuration.py
index 3434ded..f8d37c7 100644
--- a/excalibur/configuration.py
+++ b/excalibur/configuration.py
@@ -132,8 +132,8 @@ def parameterized_config(template):
 # for Flask
 ALLOWED_EXTENSIONS = ['pdf', 'json']
 SECRET_KEY = conf.get('webserver', 'SECRET_KEY')
-PROJECT_ROOT = os.path.dirname(os.path.abspath(__file__))
-PDFS_FOLDER = os.path.join(PROJECT_ROOT, 'www/static/uploads')
+PROJECT_ROOT = os.path.normcase(os.path.dirname(os.path.abspath(__file__)))
+PDFS_FOLDER = os.path.normcase(os.path.join(PROJECT_ROOT, 'www/static/uploads'))
 USING_SQLITE = True if conf.get('core', 'SQL_ALCHEMY_CONN').startswith('sqlite') else False
 
 get = conf.get
diff --git a/excalibur/www/views.py b/excalibur/www/views.py
index 8c0dab9..f11cc20 100644
--- a/excalibur/www/views.py
+++ b/excalibur/www/views.py
@@ -85,6 +85,7 @@ def workspaces(file_id):
         for page in imagepaths:
             imagepaths[page] = imagepaths[page].replace(
             os.path.join(conf.PROJECT_ROOT, 'www'), '')
+            imagepaths[page] = imagepaths[page].replace(os.sep, '/')
         filedims = file.filedims
         imagedims = file.imagedims
         detected_areas = file.detected_areas