diff --git a/config/obs_config_SCI_WIDE_phot.yaml b/config/obs_config_SCI_WIDE_phot.yaml
index 634d95de925b3ac320f7710a322f1e2f525575a9..e491daefc542b7043bc6752a72a8977b504479d6 100644
--- a/config/obs_config_SCI_WIDE_phot.yaml
+++ b/config/obs_config_SCI_WIDE_phot.yaml
@@ -63,7 +63,7 @@ call_sequence:
     dead_pixels: YES
     bad_columns: YES
   # Apply response nonlinearity
-  # nonlinearity: {}
+  nonlinearity: {}
   # Apply CCD Saturation & Blooming
   blooming: {}
   # Run CTE simulation