diff --git a/dap/algos/mask.py b/dap/algos/mask.py
index 0015d49..7c73ef1 100644
--- a/dap/algos/mask.py
+++ b/dap/algos/mask.py
@@ -1,11 +1,11 @@
 import numpy as np
 
 
-def calc_mask_pixels(pfdata, pixel_mask_pf):
+def calc_mask_pixels(data, pixel_mask_pf):
     if pixel_mask_pf is None:
         return
 
-    pfdata[pixel_mask_pf != 1] = np.nan #TODO: boolean mask
+    data[pixel_mask_pf != 1] = np.nan #TODO: boolean mask