diff --git a/pkgs/development/libraries/science/math/openblas/default.nix b/pkgs/development/libraries/science/math/openblas/default.nix
index 6694399b8b9..11b6b3547e8 100644
--- a/pkgs/development/libraries/science/math/openblas/default.nix
+++ b/pkgs/development/libraries/science/math/openblas/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, gfortran, perl, liblapack, config, coreutils
+{ stdenv, fetchurl, gfortran, perl, config, coreutils
 # Most packages depending on openblas expect integer width to match pointer width,
 # but some expect to use 32-bit integers always (for compatibility with reference BLAS).
 , blas64 ? null
@@ -34,8 +34,6 @@ stdenv.mkDerivation {
 
   inherit blas64;
 
-  preBuild = "cp ${liblapack.src} lapack-${liblapack.meta.version}.tgz";
-
   nativeBuildInputs = optionals stdenv.isDarwin [coreutils] ++ [gfortran perl];
 
   makeFlags =