diff --git a/default.nix b/default.nix
index 3facc5c..6598c74 100644
--- a/default.nix
+++ b/default.nix
@@ -75,6 +75,7 @@ in
       CREDENTIALS_DIRECTORY = builtins.toString ./.credentials;
       DGSI_DEBUG = "true";
       DGSI_STATIC_ROOT = builtins.toString ./.static;
+      DGSI_MEDIA_ROOT = builtins.toString ./.media;
       DGSI_KANIDM_CLIENT = "dgsi_test";
     };