diff --git a/pkgs/os-specific/linux/ffado/default.nix b/pkgs/os-specific/linux/ffado/default.nix
index 1f7aa3abf0b6..610f9d31353e 100644
--- a/pkgs/os-specific/linux/ffado/default.nix
+++ b/pkgs/os-specific/linux/ffado/default.nix
@@ -29,9 +29,11 @@ mkDerivation rec {
 
   src = fetchurl {
     url = "http://www.ffado.org/files/libffado-${version}.tgz";
-    hash = "sha256-0iFXYyGctOoHCdc232Ud80/wV81tiS7ItiS0uLKyq2Y=";
+    hash = "sha256-f0x561ehKw6uMSri0RZip+v1JHZuhixtywl0PVU/N44=";
   };
 
+  sourceRoot = "libffado-${version}/libffado";
+
   prePatch = ''
     substituteInPlace ./support/tools/ffado-diag.in \
       --replace /lib/modules/ "/run/booted-system/kernel-modules/lib/modules/"