diff --git a/roles/matrix-base/tasks/validate_config.yml b/roles/matrix-base/tasks/validate_config.yml
index 3ea1f5a1..52686619 100644
--- a/roles/matrix-base/tasks/validate_config.yml
+++ b/roles/matrix-base/tasks/validate_config.yml
@@ -8,4 +8,4 @@
   when: "item in vars"
   with_items:
     - 'matrix_user_uid'
-    - 'matrix_user_uid'
+    - 'matrix_user_gid'