diff --git a/app/views_project.py b/app/views_project.py
index 5e2277a..8d9a9bb 100644
--- a/app/views_project.py
+++ b/app/views_project.py
@@ -215,7 +215,7 @@ def add_project():
             payload_location = request.form['payload_location']
             settings.payload_location = PayloadLocation[payload_location]
 
-            settings.plugin_guardrail_data = request.form['guardrail_data']
+            settings.plugin_guardrail_data = request.form.get('guardrail_data', '')
 
             # overwrite project
             project = storage.get_project(project_name)