diff --git a/firefox-mozconfig b/firefox-mozconfig
index fd2ff9b..469d5c1 100644
--- a/firefox-mozconfig
+++ b/firefox-mozconfig
@@ -14,7 +14,7 @@ ac_add_options --update-channel=release
 ac_add_options --allow-addon-sideload
 ac_add_options --with-system-fdk-aac
 ac_add_options --enable-js-shell
-ac_add_options --with-unsigned-addon-scopes=apps,system
+ac_add_options --with-unsigned-addon-scopes=app,system
 
 export BUILD_OFFICIAL=1
 export MOZILLA_OFFICIAL=1