diff --git a/hoot-core/src/main/cpp/hoot/core/visitors/geometrymodifiers/GeometryModifierVisitor.h b/hoot-core/src/main/cpp/hoot/core/visitors/geometrymodifiers/GeometryModifierVisitor.h
index d052029..8425edc 100644
--- a/hoot-core/src/main/cpp/hoot/core/visitors/geometrymodifiers/GeometryModifierVisitor.h
+++ b/hoot-core/src/main/cpp/hoot/core/visitors/geometrymodifiers/GeometryModifierVisitor.h
@@ -49,6 +49,10 @@ class GeometryModifierVisitor : public ElementVisitor
friend class GeometryModifierOp;
public:
+
+ GeometryModifierVisitor() = default;
+ virtual ~GeometryModifierVisitor() = default;
+
virtual void setOsmMap(OsmMap* pMap) { _pMap = pMap; }
void setActionDesc(GeometryModifierActionDesc actionDesc ) { _actionDesc = actionDesc; }