diff --git a/csiborgtools/flow/flow_model.py b/csiborgtools/flow/flow_model.py
index 5000176..b2fd2d2 100644
--- a/csiborgtools/flow/flow_model.py
+++ b/csiborgtools/flow/flow_model.py
@@ -190,9 +190,7 @@ class DataLoader:
         # For no-field read in Carrick+2015 but then zero it.
         if simname == "no_field":
             simname = "Carrick2015"
-            to_wipe = True
-        else:
-            to_wipe = False
+        to_wipe = simname == "no_field"
 
         if not all(0 <= ksim < len(nsims) for ksim in ksims):
             raise ValueError(f"Invalid simulation index: `{ksims}`")