diff --git a/internal/activities/combine_premis.go b/internal/activities/combine_premis.go
index 0dd61e20..58925df6 100644
--- a/internal/activities/combine_premis.go
+++ b/internal/activities/combine_premis.go
@@ -122,7 +122,10 @@ func CombinePREMISCopy(source_filepath string, destination_filepath string) (boo
 	CombinePREMISAddChildElements(dest_premis_element, source_premis_agent_elements)
 
 	dest_doc.Indent(2)
-	dest_doc.WriteToFile(destination_filepath)
+	err = dest_doc.WriteToFile(destination_filepath)
+	if err != nil {
+		panic("ZZZ")
+	}
 
 	return true, nil
 }