diff --git a/.mozconfig-x86_64-pc-linux-gnu b/.mozconfig-x86_64-pc-linux-gnu
index 81779af2341a..b6130b06e2df 100644
--- a/.mozconfig-x86_64-pc-linux-gnu
+++ b/.mozconfig-x86_64-pc-linux-gnu
@@ -45,6 +45,7 @@ ac_add_options --with-app-name=waterfox
 ac_add_options --with-branding=browser/branding/waterfox
 ac_add_options --with-distribution-id=net.waterfox
 ac_add_options --with-l10n-base=$PWD/browser/locales/l10n
+ac_add_options --with-mozilla-api-keyfile="$PWD"/mozilla-api
 
 export RUSTC_OPT_LEVEL=2
 export MOZ_INCLUDE_SOURCE_INFO=1