diff --git a/pkgs/applications/science/math/scilab/default.nix b/pkgs/applications/science/math/scilab/default.nix
index 8482bd6fe94..d6170f8f58e 100644
--- a/pkgs/applications/science/math/scilab/default.nix
+++ b/pkgs/applications/science/math/scilab/default.nix
@@ -16,8 +16,7 @@ stdenv.mkDerivation rec {
   name = "scilab-${version}";
   src = fetchurl {
     url = "http://www.scilab.org/download/${version}/${name}-src.tar.gz";
-    # md5 coming from http://www.scilab.org/download/index_download.php
-    md5 = "17a7a6aa52918f33d96777a0dc423658";
+    sha256 = "1adk6jqlj7i3gjklvlf1j3il1nb22axnp4rvwl314an62siih0sc";
   };
 
   buildInputs = [gfortran ncurses]