diff --git a/privatestorageio.nix b/privatestorageio.nix
index dd6dd425e8c6dd66860bcd758f11ae622a6ddd0c..cde46b16f6ed537bb5ee74c5641409b11716e11a 100644
--- a/privatestorageio.nix
+++ b/privatestorageio.nix
@@ -1,8 +1,8 @@
-{ stdenv, graphviz, python3Packages }:
+{ stdenv, lib, graphviz, python3Packages }:
 stdenv.mkDerivation rec {
   version = "0.0";
   name = "privatestorageio-${version}";
-  src = ./.;
+  src = lib.cleanSource ./.;
 
   depsBuildBuild = [
     graphviz