diff --git a/mozilla/rdf/base/src/Makefile.in b/mozilla/rdf/base/src/Makefile.in
index cdcdd833bf3..5a87033b476 100644
--- a/mozilla/rdf/base/src/Makefile.in
+++ b/mozilla/rdf/base/src/Makefile.in
@@ -54,8 +54,12 @@ REQUIRES = netlib rdf rdfutil raptor xpcom
 
 MKSHLIB :=
 
+DEFINES += -DXPIDL_JS_STUBS
+
 # we don't want the shared lib, but we want to force the creation of a static lib.
 override NO_SHARED_LIB=1
 override NO_STATIC_LIB=
 
 include $(topsrcdir)/config/rules.mk
+
+
diff --git a/mozilla/rdf/content/src/Makefile.in b/mozilla/rdf/content/src/Makefile.in
index 096e3cacf9e..7bc8c6775f2 100644
--- a/mozilla/rdf/content/src/Makefile.in
+++ b/mozilla/rdf/content/src/Makefile.in
@@ -67,6 +67,8 @@ INCLUDES += -I$(srcdir)/../../../layout/html/base/src
 
 MKSHLIB :=
 
+DEFINES += -DXPIDL_JS_STUBS
+
 # we don't want the shared lib, but we want to force the creation of a static lib.
 override NO_SHARED_LIB=1
 override NO_STATIC_LIB=