diff --git a/code/IFCUtil.h b/code/IFCUtil.h
index 8afc19881..669befea4 100644
--- a/code/IFCUtil.h
+++ b/code/IFCUtil.h
@@ -238,6 +238,10 @@ public:
 
 public:
 
+
+	virtual ~Curve() {}
+
+
 	// check if a curve is closed 
 	virtual bool IsClosed() const = 0;