diff --git a/nixos/modules/services/misc/gitea.nix b/nixos/modules/services/misc/gitea.nix
index ec88de6da3ba..f6ef2bb91910 100644
--- a/nixos/modules/services/misc/gitea.nix
+++ b/nixos/modules/services/misc/gitea.nix
@@ -666,6 +666,7 @@ in
          USER = cfg.user;
          HOME = cfg.stateDir;
          GITEA_WORK_DIR = cfg.stateDir;
+         GITEA_CUSTOM = cfg.customDir;
        };
 
        serviceConfig = {