diff --git a/mozilla/mailnews/addrbook/prefs/resources/content/MANIFEST b/mozilla/mailnews/addrbook/prefs/resources/content/MANIFEST
index 7dce29ff408..7d0ae53a4a5 100644
--- a/mozilla/mailnews/addrbook/prefs/resources/content/MANIFEST
+++ b/mozilla/mailnews/addrbook/prefs/resources/content/MANIFEST
@@ -16,4 +16,4 @@
 # This is a list of local files which get copied to the res\mailnews\messenger directory
 #
 
-pref-addressing.html
+pref-addressing.xul
diff --git a/mozilla/mailnews/addrbook/prefs/resources/content/Makefile.in b/mozilla/mailnews/addrbook/prefs/resources/content/Makefile.in
index d9c89c05e04..002403864c4 100644
--- a/mozilla/mailnews/addrbook/prefs/resources/content/Makefile.in
+++ b/mozilla/mailnews/addrbook/prefs/resources/content/Makefile.in
@@ -29,7 +29,7 @@ include $(topsrcdir)/config/rules.mk
 SAMPLES_DIR = $(DIST)/bin/chrome/addressbook/content/default
 
 EXPORT_RESOURCE_SAMPLES = \
-	$(srcdir)/pref-addressing.html \
+	$(srcdir)/pref-addressing.xul \
 	$(NULL)
 
 EXPORT_RESOURCE_SAMPLES_TO_REMOVE := $(addprefix $(SAMPLES_DIR)/, $(EXPORT_RESOURCE_SAMPLES))
diff --git a/mozilla/mailnews/addrbook/prefs/resources/content/makefile.win b/mozilla/mailnews/addrbook/prefs/resources/content/makefile.win
index e6c306d1675..ee90d2b373e 100644
--- a/mozilla/mailnews/addrbook/prefs/resources/content/makefile.win
+++ b/mozilla/mailnews/addrbook/prefs/resources/content/makefile.win
@@ -20,7 +20,7 @@ DEPTH=..\..\..\..\..
 include <$(DEPTH)\config\rules.mak>
 
 install:: 
-	$(MAKE_INSTALL) pref-addressing.html $(DIST)\bin\chrome\addressbook\content\default
+	$(MAKE_INSTALL) pref-addressing.xul $(DIST)\bin\chrome\addressbook\content\default
 
 clobber::
-	rm -f $(DIST)\chrome\addressbook\content\default\pref-addressing.html
+	rm -f $(DIST)\chrome\addressbook\content\default\pref-addressing.xul