diff --git a/src/python/impactx/dashboard/Input/defaults.py b/src/python/impactx/dashboard/Input/defaults.py
index 359d563b7..856833ac7 100644
--- a/src/python/impactx/dashboard/Input/defaults.py
+++ b/src/python/impactx/dashboard/Input/defaults.py
@@ -23,7 +23,7 @@ class DashboardDefaults:
 
     DISTRIBUTION = {
         "selected_distribution": "Waterbag",
-        "selectedDistributionType": "Twiss",
+        "selected_distribution_type": "Twiss",
     }
 
     LATTICE = {