diff --git a/nix/module.nix b/nix/module.nix
index e1bdb6e..f6a7b64 100644
--- a/nix/module.nix
+++ b/nix/module.nix
@@ -128,7 +128,7 @@ in
       };
 
       script = ''
-        ORIGIN=https://${cfg.domain} PORT=${toString cfg.webAppPort} ${pkgs.nodejs_22}/bin/node ${cfg.package}/web-app
+        PUBLIC_ORIGIN=https://${cfg.domain} ORIGIN=https://${cfg.domain} PORT=${toString cfg.webAppPort} ${pkgs.nodejs_22}/bin/node ${cfg.package}/web-app
       '';
     };
 
diff --git a/web-app/src/lib/utils.ts b/web-app/src/lib/utils.ts
index b559589..80c9929 100644
--- a/web-app/src/lib/utils.ts
+++ b/web-app/src/lib/utils.ts
@@ -146,5 +146,5 @@ export const handleImagePaste = async (event: ClipboardEvent) => {
   return newContent;
 };
 
-export const API_BASE_PREFIX = dev ? "http://localhost:3000" : `${process.env.ORIGIN}/api`;
+export const API_BASE_PREFIX = dev ? "http://localhost:3000" : `${import.meta.env.PUBLIC_ORIGIN}/api`;
 export const NGINX_BASE_PREFIX = dev ? "http://localhost:18000" : "";