diff --git a/rdf/datasource/src/nsXULContentSink.cpp b/rdf/datasource/src/nsXULContentSink.cpp
index d3fa204668b5..d23214276274 100644
--- a/rdf/datasource/src/nsXULContentSink.cpp
+++ b/rdf/datasource/src/nsXULContentSink.cpp
@@ -97,10 +97,6 @@ static PRLogModuleInfo* gLog;
 // RDF core vocabulary
 
 #include "rdf.h"
-DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, child); // Used to indicate the containment relationship.
-DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, instanceOf);
-DEFINE_RDF_VOCAB(RDF_NAMESPACE_URI, RDF, type); 
-
 
 // XXX This is sure to change. Copied from mozilla/layout/xul/content/src/nsXULAtoms.cpp
 #define XUL_NAMESPACE_URI "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"