diff --git a/python/lsst/meas/algorithms/sourceSelector.py b/python/lsst/meas/algorithms/sourceSelector.py
index 16f2f4af..979d603f 100644
--- a/python/lsst/meas/algorithms/sourceSelector.py
+++ b/python/lsst/meas/algorithms/sourceSelector.py
@@ -418,15 +418,15 @@ class RequireUnresolved(BaseLimit):
     the limit, and then the `apply` method can be used to identify sources
     in the catalog that match the configured limit.
     """
-    name = pexConfig.Field(dtype=str, default="base_ClassificationExtendedness_value",
+    name = pexConfig.Field(dtype=str, default="base_ClassificationSizeExtendedness_value",
                            doc="Name of column for star/galaxy separation")
 
     def setDefaults(self):
         """Set default
 
-        ``base_ClassificationExtendedness_value < 0.5`` means unresolved.
+        Values below the threshold are unresolved.
         """
-        self.maximum = 0.5
+        self.maximum = 0.1
 
     def apply(self, catalog):
         """Apply the flag requirements to a catalog