diff --git a/python/lsst/ip/diffim/makeKernel.py b/python/lsst/ip/diffim/makeKernel.py
index f1958db9..b5457b68 100644
--- a/python/lsst/ip/diffim/makeKernel.py
+++ b/python/lsst/ip/diffim/makeKernel.py
@@ -100,7 +100,10 @@ def __init__(self, *args, **kwargs):
         # so cannot easily be constructed with makeSubtask
         self.background = SubtractBackgroundTask(config=self.kConfig.afwBackgroundConfig, name="background",
                                                  parentTask=self)
+
         self.selectSchema = lsst.afw.table.SourceTable.makeMinimalSchema()
+        # Add coordinate error fields:
+        lsst.afw.table.CoordKey.addErrorFields(self.selectSchema)
         self.selectAlgMetadata = lsst.daf.base.PropertyList()
         self.makeSubtask("selectDetection", schema=self.selectSchema)
         self.makeSubtask("selectMeasurement", schema=self.selectSchema, algMetadata=self.selectAlgMetadata)