diff --git a/src/freedombone-app-matrix b/src/freedombone-app-matrix
index 1bba10ab25a57da0db26882530bc220bb157157f..b4953cea806b7d49fa0d32a708c361062da44c63 100755
--- a/src/freedombone-app-matrix
+++ b/src/freedombone-app-matrix
@@ -444,7 +444,9 @@ function add_user_matrix {
     read_config_param MATRIX_DOMAIN_NAME
 
     if [[ "$new_username" == "$MY_USERNAME" ]]; then
-        add_user_matrix_admin='-a'
+        add_user_matrix_admin='--admin'
+    else
+        add_user_matrix_admin='--no-admin'
     fi
 
     "${PROJECT_NAME}-pass" -u "$new_username" -a matrix -p "$new_user_password"