diff --git a/pkgs/applications/science/math/scilab-bin/default.nix b/pkgs/applications/science/math/scilab-bin/default.nix
index f9abdee2d148..5dea2c7653aa 100644
--- a/pkgs/applications/science/math/scilab-bin/default.nix
+++ b/pkgs/applications/science/math/scilab-bin/default.nix
@@ -39,8 +39,6 @@ stdenv.mkDerivation {
     xorg.libXxf86vm
   ];
 
-  phases = [ "unpackPhase" "fixupPhase" "installPhase" ];
-
   fixupPhase = ''
     sed -i 's|\$(/bin/|$(|g' bin/scilab
     sed -i 's|/usr/bin/||g' bin/scilab