diff --git a/src/ifcconvert/ColladaSerializer.cpp b/src/ifcconvert/ColladaSerializer.cpp
index b6d5809c23..98673ba243 100644
--- a/src/ifcconvert/ColladaSerializer.cpp
+++ b/src/ifcconvert/ColladaSerializer.cpp
@@ -345,11 +345,7 @@ void ColladaSerializer::ColladaExporter::write(const IfcGeom::TriangulationEleme
 	std::string slabSuffix = "";
 	if (o->type() == "IfcSlab")
 	{
-		IfcSlab* slab = (IfcSlab*)o->product();
-		std::cout << "before if \n";
-		if (slab->PredefinedType() == IfcSlabTypeEnum::IfcSlabTypeEnum::IfcSlabType_ROOF) slabSuffix = " Roof";
-		else if (slab->PredefinedType() == IfcSlabTypeEnum::IfcSlabTypeEnum::IfcSlabType_FLOOR) slabSuffix = " Floor";
-		std::cout << "after if \n";
+		slabSuffix = differentiateSlabTypes(o);
 	}
 	
 	const std::string name = serializer->settings().get(SerializerSettings::USE_ELEMENT_GUIDS) ?
@@ -373,7 +369,24 @@ void ColladaSerializer::ColladaExporter::write(const IfcGeom::TriangulationEleme
 		DeferredObject(name, representation_id, o->type(), o->transformation().matrix().data(), mesh.verts(), mesh.normals(),
 				mesh.faces(), mesh.edges(), mesh.material_ids(), mesh.materials(), material_references, mesh.uvs()));
 	deferreds.push_back(defered);
-	
+}
+
+std::string ColladaSerializer::ColladaExporter::differentiateSlabTypes(const IfcGeom::TriangulationElement<real_t>* o) {
+	IfcSlab* slab = (IfcSlab*)o->product();
+	switch (slab->PredefinedType()){
+			case (IfcSlabTypeEnum::IfcSlabTypeEnum::IfcSlabType_ROOF):
+				return "_Roof";
+				break;
+			case (IfcSlabTypeEnum::IfcSlabTypeEnum::IfcSlabType_LANDING):
+				return "_Landing";
+				break;
+			case (IfcSlabTypeEnum::IfcSlabTypeEnum::IfcSlabType_BASESLAB):
+				return "_BasesLab";
+				break;
+			default:
+				return "_Unknown";
+				break;
+		}
 }
 
 void ColladaSerializer::ColladaExporter::endDocument() {
diff --git a/src/ifcconvert/ColladaSerializer.h b/src/ifcconvert/ColladaSerializer.h
index 82473ec4d6..15bf6f84b8 100644
--- a/src/ifcconvert/ColladaSerializer.h
+++ b/src/ifcconvert/ColladaSerializer.h
@@ -198,6 +198,7 @@ private:
 		COLLADABU::NativeString filename;
 		COLLADASW::StreamWriter stream;
 		ColladaScene scene;
+		std::string differentiateSlabTypes(const IfcGeom::TriangulationElement<real_t>* o);
 	public:
         /// @param double_precision Whether to use "double precision" (up to 16 decimals) or not (6 or 7 decimals).
 		ColladaExporter(const std::string& scene_name, const std::string& fn, ColladaSerializer *_serializer,
diff --git a/src/ifcconvert/IfcConvert.cpp b/src/ifcconvert/IfcConvert.cpp
index ca0226852c..05bb2602b5 100644
--- a/src/ifcconvert/IfcConvert.cpp
+++ b/src/ifcconvert/IfcConvert.cpp
@@ -510,7 +510,7 @@ int main(int argc, char** argv)
 
 	if (serializer->settings().get(SerializerSettings::USE_ELEMENT_HIERARCHY) && output_extension != ".dae")
 	{
-		Logger::Error("--user-element-hierarchy can be used only with .dae output.");
+		Logger::Error("--use-element-hierarchy can be used only with .dae output.");
 		write_log();
 		print_usage();
 		return EXIT_FAILURE;