diff --git a/hoot-core/src/main/cpp/hoot/core/criterion/BuildingCriterion.h b/hoot-core/src/main/cpp/hoot/core/criterion/BuildingCriterion.h
index 561cb43..90e2b07 100644
--- a/hoot-core/src/main/cpp/hoot/core/criterion/BuildingCriterion.h
+++ b/hoot-core/src/main/cpp/hoot/core/criterion/BuildingCriterion.h
@@ -53,6 +53,9 @@ public:
bool isSatisfied(const Tags& tags, const ElementType& elementType) const;
+ virtual ConflatableGeometryType getGeometryType() const
+ { return ConflatableGeometryType::Polygon; }
+
virtual void setOsmMap(const OsmMap* map) { _map = map->shared_from_this(); }
virtual ElementCriterionPtr clone() { return ElementCriterionPtr(new BuildingCriterion(_map)); }