diff --git a/src/main/antlr3/org/jf/smali/smaliTreeWalker.g b/src/main/antlr3/org/jf/smali/smaliTreeWalker.g
index 45ee8108..9e4c8391 100644
--- a/src/main/antlr3/org/jf/smali/smaliTreeWalker.g
+++ b/src/main/antlr3/org/jf/smali/smaliTreeWalker.g
@@ -135,6 +135,7 @@ smali_file
 header	returns[TypeIdItem classType, int accessFlags, TypeIdItem superType, TypeListItem implementsList, StringIdItem sourceSpec]
 :	class_spec super_spec implements_list source_spec
 	{
+		//TODO: if a class has no fields or methods, it shouldn't have a ClassDataItem
 		classDataItem = new ClassDataItem(dexFile, 0);
 		classDefItem = new ClassDefItem(dexFile, $class_spec.type, $class_spec.accessFlags, 
 			$super_spec.type, $implements_list.implementsList, $source_spec.source, classDataItem);