diff --git a/tests.toml b/tests.toml
index 3d1080e..9b3ea40 100644
--- a/tests.toml
+++ b/tests.toml
@@ -11,7 +11,7 @@ test_format = 1.0
 # (Remove this key entirely if not needed)
 preinstall = """
     sudo yunohost tools update apps
-    sudo yunohost app install https://github.com/YunoHost-Apps/synapse_ynh/ -a "domain=$domain&server_name=$server_name&is_free_registration=$is_free_registration&jitsi_server=$jitsi_server" --force
+    sudo yunohost app install https://github.com/YunoHost-Apps/synapse_ynh/ -a "domain=$domain&init_main_permission=all_users&server_name=$server_name&is_free_registration=$is_free_registration&jitsi_server=$jitsi_server" --force
     """
 
 # -------------------------------
@@ -48,4 +48,4 @@ preinstall = """
 only = ["install.subdir"]
 
 args.botadmin = "@johndoe:server.name"
-args.botusers = "@john:server.name,@jdoe:server.name,@janedoe:server.name"
\ No newline at end of file
+args.botusers = "@john:server.name,@jdoe:server.name,@janedoe:server.name"