diff --git a/src/ifcgeom_schema_agnostic/IfcGeomIterator.h b/src/ifcgeom_schema_agnostic/IfcGeomIterator.h
index 04437e58a4..4f45c108a1 100644
--- a/src/ifcgeom_schema_agnostic/IfcGeomIterator.h
+++ b/src/ifcgeom_schema_agnostic/IfcGeomIterator.h
@@ -107,6 +107,10 @@ namespace IfcGeom {
 			}
 		}
 
+		~Iterator() {
+			delete implementation_;
+		}
+
 		bool initialize() {
 			if (implementation_) {
 				return implementation_->initialize();
diff --git a/src/ifcgeom_schema_agnostic/IteratorImplementation.h b/src/ifcgeom_schema_agnostic/IteratorImplementation.h
index fc9ca78aeb..7879263264 100644
--- a/src/ifcgeom_schema_agnostic/IteratorImplementation.h
+++ b/src/ifcgeom_schema_agnostic/IteratorImplementation.h
@@ -73,6 +73,7 @@ namespace IfcGeom {
 		virtual BRepElement* get_native() = 0;
 		virtual const Element* get_object(int id) = 0;
 		virtual IfcUtil::IfcBaseClass* create() = 0;
+		virtual ~IteratorImplementation() {}
 	};
 
 }