diff --git a/hoot-core/src/main/cpp/hoot/core/criterion/RailwayCriterion.h b/hoot-core/src/main/cpp/hoot/core/criterion/RailwayCriterion.h
index 1501f11..748fe2b 100644
--- a/hoot-core/src/main/cpp/hoot/core/criterion/RailwayCriterion.h
+++ b/hoot-core/src/main/cpp/hoot/core/criterion/RailwayCriterion.h
@@ -47,6 +47,9 @@ public:
virtual bool isSatisfied(const ConstElementPtr& e) const override;
+ virtual ConflatableGeometryType getGeometryType() const
+ { return ConflatableGeometryType::Line; }
+
virtual ElementCriterionPtr clone()
{ return ElementCriterionPtr(new RailwayCriterion()); }