diff --git a/python/lsst/ts/wep/task/generateDonutFromRefitWcsTask.py b/python/lsst/ts/wep/task/generateDonutFromRefitWcsTask.py
index bec2f17e..bb6cd86e 100644
--- a/python/lsst/ts/wep/task/generateDonutFromRefitWcsTask.py
+++ b/python/lsst/ts/wep/task/generateDonutFromRefitWcsTask.py
@@ -138,6 +138,7 @@ class GenerateDonutFromRefitWcsTaskConfig(
         dtype=str,
         optional=True,
     )
+    margin = pexConfig.Field(doc="Size of margin in pixels", dtype=int, default=80)
 
     # Took these defaults from atmospec/centroiding which I used
     # as a template for implementing WCS fitting in a task.
@@ -384,6 +385,7 @@ def run(
                     exposure.wcs,
                     filterName,
                     donutSelectorTask,
+                    margin,
                 )
 
                 donutCatalog = donutCatalogToAstropy(