diff --git a/rdf/base/src/rdfutil.h b/rdf/base/src/rdfutil.h
index 80657e8ebd92..284f8e57ae58 100644
--- a/rdf/base/src/rdfutil.h
+++ b/rdf/base/src/rdfutil.h
@@ -22,7 +22,6 @@
 #ifndef rdfutil_h__
 #define rdfutil_h__
 
-#include "prtypes.h"
 
 class nsACString;
 class nsCString;