diff --git a/scripts/calibration/params.py b/scripts/calibration/params.py
index 5b2ef0c9..ea871119 100644
--- a/scripts/calibration/params.py
+++ b/scripts/calibration/params.py
@@ -32,9 +32,6 @@
 ## Area of a tile in deg^2
 area_tile = 0.25
 
-## Pixel size in arcsec
-pixel_size = 0.187
-
 ## Shape measurement method (only 'ngmix' is supported):
 ##  'ngmix': multi-epoch model fitting
 shape = "ngmix"
diff --git a/workflow/image_sims/params_im_sim.py b/workflow/image_sims/params_im_sim.py
index e87124d0..1cd395c6 100644
--- a/workflow/image_sims/params_im_sim.py
+++ b/workflow/image_sims/params_im_sim.py
@@ -36,9 +36,6 @@
 ## Area of a tile in deg^2
 area_tile = 0.25
 
-## Pixel size in arcsec
-pixel_size = 0.187
-
 ## Shape measurement method, implemented is
 ##  'ngix': multi-epoch model fitting
 ##  'galsim': stacked-image moments (experimental)