diff --git a/src/ifcgeom/schema/mapping.cpp b/src/ifcgeom/schema/mapping.cpp
index ee7fb7adb1..715741d00c 100644
--- a/src/ifcgeom/schema/mapping.cpp
+++ b/src/ifcgeom/schema/mapping.cpp
@@ -224,6 +224,10 @@ taxonomy::item* mapping::map_impl(const IfcSchema::IfcFaceBasedSurfaceModel* ins
 	return map_to_collection(this, inst->FbsmFaces());
 }
 
+taxonomy::item* mapping::map_impl(const IfcSchema::IfcShellBasedSurfaceModel* inst) {
+	return map_to_collection(this, inst->SbsmBoundary());
+}
+
 taxonomy::item* mapping::map_impl(const IfcSchema::IfcManifoldSolidBrep* inst) {
 	// @todo voids
 	return map(inst->Outer());
diff --git a/src/ifcgeom/schema/mapping.i b/src/ifcgeom/schema/mapping.i
index 6c81f9058a..9ebb31fb7f 100644
--- a/src/ifcgeom/schema/mapping.i
+++ b/src/ifcgeom/schema/mapping.i
@@ -26,7 +26,7 @@
 
 BIND(IfcProduct);
 
-// BIND(IfcShellBasedSurfaceModel);
+BIND(IfcShellBasedSurfaceModel);
 BIND(IfcFaceBasedSurfaceModel);
 BIND(IfcRepresentation);
 BIND(IfcMappedItem);