diff --git a/mailnews/public/Makefile.in b/mailnews/public/Makefile.in
index 91a2175349d3..f2ac6094a0b4 100644
--- a/mailnews/public/Makefile.in
+++ b/mailnews/public/Makefile.in
@@ -23,6 +23,7 @@ VPATH		= @srcdir@
 include $(DEPTH)/config/autoconf.mk
 
 EXPORTS= MailNewsTypes.h\
+		rosetta_mailnews.h\
 		$(NULL)
 
 IDLSRCS = \
diff --git a/mailnews/public/makefile.win b/mailnews/public/makefile.win
index 190bc81b230a..08e2f2ea7b53 100644
--- a/mailnews/public/makefile.win
+++ b/mailnews/public/makefile.win
@@ -19,6 +19,7 @@ DEPTH=..\..
 IGNORE_MANIFEST=1
 
 EXPORTS = MailNewsTypes.h \
+		rosetta_mailnews.h\
         $(NULL)
 
 MODULE=mailnews