diff --git a/pkgs/tools/networking/reaver-wps-t6x/default.nix b/pkgs/tools/networking/reaver-wps-t6x/default.nix
index 6e4a5561f07..2f0e19b231c 100644
--- a/pkgs/tools/networking/reaver-wps-t6x/default.nix
+++ b/pkgs/tools/networking/reaver-wps-t6x/default.nix
@@ -15,7 +15,9 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = [ libpcap sqlite pixiewps ];
 
-  sourceRoot = "reaver-wps-fork-t6x-v${version}-src/src";
+  setSourceRoot = ''
+    sourceRoot=$(echo */src)
+  '';
 
   configureFlags = "--sysconfdir=${confdir}";