diff --git a/DataQualityTester/lib/middleware.py b/DataQualityTester/lib/middleware.py
index 61a5f17..ad64130 100644
--- a/DataQualityTester/lib/middleware.py
+++ b/DataQualityTester/lib/middleware.py
@@ -9,7 +9,7 @@
 @app.before_request
 def csrf_protect():
     if request.method == 'POST':
-        token = session.pop('_csrf_token', None)
+        token = session.get('_csrf_token', None)
         if not token or token != request.form.get('_csrf_token'):
             abort(403)