diff --git a/grafana/values.yaml b/grafana/values.yaml
index 21b7141e4f..ba95c92b78 100644
--- a/grafana/values.yaml
+++ b/grafana/values.yaml
@@ -377,7 +377,6 @@ conf:
     auth.ldap:
       enabled: true
       config_file: /etc/grafana/ldap.toml
-      allow_sign_up: true
     paths:
       data: /var/lib/grafana/data
       plugins: /var/lib/grafana/plugins