diff --git a/src/test/io/export_obj.h b/src/test/io/export_obj.h
index f3f351714..2b1355d00 100644
--- a/src/test/io/export_obj.h
+++ b/src/test/io/export_obj.h
@@ -47,6 +47,9 @@ namespace vcg
 				
 				static bool Save(SaveMeshType &m, const char * filename , bool binary =true, const char *objectname=0)	
 				{
+					if(m.vert.size() == 0)return false;
+					if(m.face.size() == 0)return false;
+
 					if(binary)
 					{
 						return false;
@@ -56,7 +59,7 @@ namespace vcg
 						std::ofstream stream(filename);
 
 						if (stream.fail())
-							return false;
+							return false; 
 
 						stream << "#GENERATED BY EXPORT_OBJ" << std::endl;
 
@@ -64,9 +67,7 @@ namespace vcg
 						stream << std::endl << "#VERTEXS" << std::endl;
 						VertexIterator vi;
 						for(vi=m.vert.begin(); vi!=m.vert.end(); ++vi)
-						{
 							stream << "v " << (*vi).P()[0] << " " << (*vi).P()[1] << " " << (*vi).P()[2] << std::endl;
-						}
 						
 						//facce
 						stream << std::endl << "#FACES" << std::endl;
@@ -84,7 +85,6 @@ namespace vcg
 						}
 
 						stream.close();
-
 						return true;
 					}
 				}