diff --git a/tests.toml b/tests.toml
index 826ece4..47bca67 100644
--- a/tests.toml
+++ b/tests.toml
@@ -6,7 +6,7 @@ test_format = 1.0
     preinstall = """
         sudo yunohost tools update apps
         sudo yunohost app install --force https://github.com/YunoHost-Apps/synapse_ynh/ \
-            -a "domain=$domain&server_name=$server_name&is_free_registration=$is_free_registration&jitsi_server=$jitsi_server"
+            -a "domain=$domain&init_main_permission=all_users&server_name=$server_name&is_free_registration=$is_free_registration&jitsi_server=$jitsi_server"
     """
 
     args.botadmin = "@johndoe:synapsedomain.tld"