diff --git a/hoot-core/src/main/cpp/hoot/core/criterion/ElementCriterion.h b/hoot-core/src/main/cpp/hoot/core/criterion/ElementCriterion.h
index 39641b7..15f8346 100644
--- a/hoot-core/src/main/cpp/hoot/core/criterion/ElementCriterion.h
+++ b/hoot-core/src/main/cpp/hoot/core/criterion/ElementCriterion.h
@@ -22,7 +22,7 @@
* This will properly maintain the copyright information. DigitalGlobe
* copyrights will be updated automatically.
*
- * @copyright Copyright (C) 2015, 2016, 2017, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ * @copyright Copyright (C) 2015, 2016, 2017, 2018, 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
*/
#ifndef ELEMENTCRITERION_H
#define ELEMENTCRITERION_H
@@ -74,7 +74,10 @@ public:
* Returns a string uniquely identifying the criterion. May contain information about the data
* contained within the criterion.
*
- * @return a descriptive string
+ * @return a string
+ * @todo Many of the crits are only returning their class names in toString(). So, we may want to
+ * add getClassName() here to mimic OsmMapOperation and ElementVisitor and make toString()
+ * optional.
*/
virtual QString toString() const = 0;
};