diff --git a/hoot-core/src/main/cpp/hoot/core/visitors/CalculateAreaVisitor.h b/hoot-core/src/main/cpp/hoot/core/visitors/CalculateAreaVisitor.h
index 33ff4af..3a532fb 100644
--- a/hoot-core/src/main/cpp/hoot/core/visitors/CalculateAreaVisitor.h
+++ b/hoot-core/src/main/cpp/hoot/core/visitors/CalculateAreaVisitor.h
@@ -44,7 +44,8 @@ public:
static std::string className() { return "hoot::CalculateAreaVisitor"; }
- CalculateAreaVisitor() : _total(0) {}
+ CalculateAreaVisitor() : _total(0) { }
+ virtual ~CalculateAreaVisitor() = default;
/**
* Returns the area in meters squared.