diff --git a/dap/algos/addmask.py b/dap/algos/addmask.py
index 30799b8..49ed2a7 100644
--- a/dap/algos/addmask.py
+++ b/dap/algos/addmask.py
@@ -56,7 +56,7 @@ def calc_apply_additional_mask(results, pixel_mask):
         pixel_mask[1794, 1503:1550] = 0
 
         # killed by CC
-        pixel_mask[1499, 655:692] = 0
+        pixel_mask[1499, 630:692] = 0
 
         # module 12 right column
         pixel_mask[68:1096, 1062] = 0