diff --git a/lib/Frontend/DeclXML.cpp b/lib/Frontend/DeclXML.cpp
index 3ae25f9..97a7f55 100644
--- a/lib/Frontend/DeclXML.cpp
+++ b/lib/Frontend/DeclXML.cpp
@@ -49,7 +49,8 @@
     addSubNodes(cast<RecordDecl>(RD));
 
     if (RD->isDefinition()) {
-      Doc.addAttribute("num_bases", RD->getNumBases());
+      // FIXME: This breaks XML generation
+      //Doc.addAttribute("num_bases", RD->getNumBases());
 
       for (CXXRecordDecl::base_class_iterator 
              base = RD->bases_begin(),