diff --git a/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/CentroidDistanceExtractor.h b/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/CentroidDistanceExtractor.h
index 1196750..b50ce49 100644
--- a/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/CentroidDistanceExtractor.h
+++ b/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/CentroidDistanceExtractor.h
@@ -23,7 +23,7 @@
* copyrights will be updated automatically.
*
* @copyright Copyright (C) 2005 VividSolutions (http://www.vividsolutions.com/)
- * @copyright Copyright (C) 2015, 2017, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ * @copyright Copyright (C) 2015, 2017, 2018, 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
*/
#ifndef CENTROIDDISTANCEEXTRACTOR_H
#define CENTROIDDISTANCEEXTRACTOR_H
@@ -45,6 +45,9 @@ class CentroidDistanceExtractor : public AbstractDistanceExtractor
public:
static std::string className() { return "hoot::CentroidDistanceExtractor"; }
+ CentroidDistanceExtractor() = default;
+ virtual ~CentroidDistanceExtractor() = default;
+
virtual double distance(const OsmMap& map, const std::shared_ptr<const Element>& target,
const std::shared_ptr<const Element>& candidate) const override;