diff --git a/grafana.md b/grafana.md
index 8dba8d3..9a0c53c 100644
--- a/grafana.md
+++ b/grafana.md
@@ -51,7 +51,7 @@ docker run --detach --name grafana \
   -e "GF_SECURITY_ADMIN_USER=admin" \
   -e "GF_SECURITY_ADMIN_PASSWORD=geii2025" \
   -e "GF_USERS_ALLOW_SIGN_UP=false" \
-  -e "GF_DEFAULT_THEME=system" \
+  -e "GF_USERS_DEFAULT_THEME=system" \
   --label "caddy=grafana.localhost" \
   --label "caddy.reverse_proxy={{upstreams 3000}}" \
   --label "caddy.tls=internal" \