diff --git a/mail/locales/Makefile.in b/mail/locales/Makefile.in
index b087455cd38..cd2747e0bf3 100644
--- a/mail/locales/Makefile.in
+++ b/mail/locales/Makefile.in
@@ -58,7 +58,7 @@ DEFINES += \
 	-DPKG_BASENAME=$(PKG_BASENAME) \
 	$(NULL)
 
-ifndef MOZ_USE_OFFICIAL_BRANDING
+ifndef MOZ_BRANDING_DIRECTORY
 DEFINES += -DMOZ_USE_GENERIC_BRANDING
 endif