diff --git a/roles/gitea/defaults/main.yaml b/roles/gitea/defaults/main.yaml
index 2302c50..ac16e5c 100644
--- a/roles/gitea/defaults/main.yaml
+++ b/roles/gitea/defaults/main.yaml
@@ -59,6 +59,7 @@ gitea_default_values:
       RUN_MODE: prod
       server:
         LFS_START_SERVER: true
+        ROOT_URL: "https://{{ gitea_short_name}}.{{ domain }}"
       service:
         DISABLE_REGISTRATION: true
       mailer: