diff --git a/hoot-core/src/main/cpp/hoot/core/criterion/LinearCriterion.h b/hoot-core/src/main/cpp/hoot/core/criterion/LinearCriterion.h
index 39f63d5..bffce77 100644
--- a/hoot-core/src/main/cpp/hoot/core/criterion/LinearCriterion.h
+++ b/hoot-core/src/main/cpp/hoot/core/criterion/LinearCriterion.h
@@ -57,6 +57,8 @@ public:
{ return QString::fromStdString(className()).remove("hoot::"); }
virtual bool supportsSpecificConflation() const { return false; }
+
+ static bool isLinearRelation(const ConstRelationPtr& relation);
};
}