diff --git a/cli/simulate_pixels.py b/cli/simulate_pixels.py
index b0f15d32..9b9bb5c5 100755
--- a/cli/simulate_pixels.py
+++ b/cli/simulate_pixels.py
@@ -82,8 +82,8 @@ def run_simulation(input_filename,
                    detector_properties,
                    output_filename,
                    response_file='../larndsim/bin/response_44.npy',
-                   light_lut_filename='../larndsim/bin/lightLUT.npy',
-                   light_det_noise_filename='../larndsim/bin/light_noise.npy',
+                   light_lut_filename='../larndsim/bin/lightLUT.npz',
+                   light_det_noise_filename='../larndsim/bin/light_noise-module0.npy',
                    bad_channels=None,
                    n_tracks=None,
                    pixel_thresholds_file=None):