diff --git a/roles/matrix-postgres/tasks/validate_config.yml b/roles/matrix-postgres/tasks/validate_config.yml
index 9158e9268..eac4dd5b1 100644
--- a/roles/matrix-postgres/tasks/validate_config.yml
+++ b/roles/matrix-postgres/tasks/validate_config.yml
@@ -36,4 +36,4 @@
 - name: Fail if Postgres password length exceeded
   fail:
     msg: "The maximum `matrix_postgres_connection_password` length is 99 characters"
-  when: "matrix_postgres_connection_hostname|length > 99"
+  when: "matrix_postgres_connection_password|length > 99"