diff --git a/scripts/install b/scripts/install
index 5b707d3..818aca5 100644
--- a/scripts/install
+++ b/scripts/install
@@ -181,7 +181,7 @@ fi
 
 # We don't test that in CI
 if ! [ ${PACKAGE_CHECK_EXEC:-0} -eq 1 ]; then
-	ynh_permission_url --permission="main" --add_url=${sandboxdomain%/} --auth_header=true
+	ynh_permission_url --permission="main" --add_url=$sandboxdomain/ --auth_header=true
 	# there is a bug in core that add a slash at the end of domain in ssowat conf for uris var
 	# so we use ${sandboxdomain%/} to remove the eccessive trailing slash
 fi