diff --git a/mozilla/client.mk b/mozilla/client.mk
index 30216751fd3..de07371cbda 100644
--- a/mozilla/client.mk
+++ b/mozilla/client.mk
@@ -229,11 +229,11 @@ MODULES_all :=                                  \
 #
 # For branches, uncomment the MOZ_CO_TAG line with the proper tag,
 # and commit this file on that tag.
-MOZ_CO_TAG           = MOZILLA_1_8_BRANCH
-NSPR_CO_TAG          = MOZILLA_1_8_BRANCH
-NSS_CO_TAG           = MOZILLA_1_8_BRANCH
-LDAPCSDK_CO_TAG      = MOZILLA_1_8_BRANCH
-LOCALES_CO_TAG       = MOZILLA_1_8_BRANCH
+MOZ_CO_TAG           = FIREFOX_1_5rc3_RELEASE
+NSPR_CO_TAG          = FIREFOX_1_5rc3_RELEASE
+NSS_CO_TAG           = FIREFOX_1_5rc3_RELEASE
+LDAPCSDK_CO_TAG      = FIREFOX_1_5rc3_RELEASE
+LOCALES_CO_TAG       = FIREFOX_1_5rc3_RELEASE
 
 BUILD_MODULES = all