1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/development/libraries/mpfi/default.nix b/nixpkgs/pkgs/development/libraries/mpfi/default.nix
index 4bc568523c9f..54abf134d366 100644
--- a/nixpkgs/pkgs/development/libraries/mpfi/default.nix
+++ b/nixpkgs/pkgs/development/libraries/mpfi/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-aj/QmJ38ifsW36JFQcbp55aIQRvOpiqLHwEh/aFXsgo=";
   };
 
-  sourceRoot = "source/mpfi";
+  sourceRoot = "${src.name}/mpfi";
 
   nativeBuildInputs = [ autoreconfHook texinfo ];
   buildInputs = [ mpfr ];