diff --git a/hexrd/ui/resources/calibration/structureless_params_tree_view.yml b/hexrd/ui/resources/calibration/structureless_params_tree_view.yml
index def2b3faf..5dcf5bc40 100644
--- a/hexrd/ui/resources/calibration/structureless_params_tree_view.yml
+++ b/hexrd/ui/resources/calibration/structureless_params_tree_view.yml
@@ -21,7 +21,7 @@ detectors:
         Y: '{det}_tvec_y'
         Z: '{det}_tvec_z'
     radius: '{det}_radius'
-  distortion parameters:
+    distortion parameters:
 Debye-Scherrer ring means:
 engineering constraints:
   distance between plates: tardis_distance_between_plates