diff --git a/wfsim/load_resource.py b/wfsim/load_resource.py
index 7120ac01..283ec9fb 100644
--- a/wfsim/load_resource.py
+++ b/wfsim/load_resource.py
@@ -268,6 +268,7 @@ def __init__(self, config=None):
 
             if config.get('field_distortion_model', "none") == "inverse_fdc":
                 self.fdc_3d = make_map(files['fdc_3d'], fmt='json.gz')
+                self.fdc_3d.scale_coordinates([1., 1., - config['drift_velocity_liquid']])
 
             if config.get('field_distortion_model', "none") == "comsol":
                 self.fd_comsol = make_map(config['field_distortion_comsol_map'], fmt='json.gz', method='RectBivariateSpline')