diff --git a/hoot-core/src/main/cpp/hoot/core/algorithms/string/ExactStringDistance.h b/hoot-core/src/main/cpp/hoot/core/algorithms/string/ExactStringDistance.h
index 98cafea..024cf62 100644
--- a/hoot-core/src/main/cpp/hoot/core/algorithms/string/ExactStringDistance.h
+++ b/hoot-core/src/main/cpp/hoot/core/algorithms/string/ExactStringDistance.h
@@ -22,7 +22,7 @@
* This will properly maintain the copyright information. DigitalGlobe
* copyrights will be updated automatically.
*
- * @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 __EXACT_STRING_DISTANCE_H__
#define __EXACT_STRING_DISTANCE_H__
@@ -48,7 +48,8 @@ public:
static std::string className() { return "hoot::ExactStringDistance"; }
- ExactStringDistance();
+ ExactStringDistance() = default;
+ virtual ~ExactStringDistance() = default;
virtual double compare(const QString& s1, const QString& s2) const override;