diff --git a/default.nix b/default.nix
index 9cc58abca..8b1a2d9c7 100644
--- a/default.nix
+++ b/default.nix
@@ -13,6 +13,7 @@
 , cmake
 , nixosTests
 , src
+, src-config
 , mobilizon-js
 }:
 
@@ -41,7 +42,7 @@ mixRelease rec {
     overrides = (final: prev:
       (lib.mapAttrs
         (_: value: value.override {
-          appConfigPath = src + "/config";
+          appConfigPath = src-config;
         })
         prev) // {
         fast_html = prev.fast_html.override {
diff --git a/flake.nix b/flake.nix
index 38a09aaa0..9c9bd15a8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,8 +18,12 @@
         mobilizon = pkgs.callPackage ./. {
           src = filter {
             root = ./.;
-            exclude = [ (filter.matchExt "nix") ];
+            exclude = [
+              (filter.matchExt "nix")
+              "js"
+            ];
           };
+          src-config = ./config;
           mobilizon-js = self.packages.x86_64-linux.mobilizon-frontend;
         };