diff --git a/nixos/modules/services/web-apps/immich.nix b/nixos/modules/services/web-apps/immich.nix
index c1a30c6ff2b3c..c9ce2e805fe02 100644
--- a/nixos/modules/services/web-apps/immich.nix
+++ b/nixos/modules/services/web-apps/immich.nix
@@ -259,7 +259,7 @@ in
       postgresEnv
       // redisEnv
       // {
-        HOST = cfg.host;
+        IMMICH_HOST = cfg.host;
         IMMICH_PORT = toString cfg.port;
         IMMICH_MEDIA_LOCATION = cfg.mediaLocation;
         IMMICH_MACHINE_LEARNING_URL = "http://localhost:3003";