diff --git a/pkgs/development/libraries/fontconfig-ultimate/default.nix b/pkgs/development/libraries/fontconfig-ultimate/default.nix
index efef59cad3b6..a2e5f69202c4 100644
--- a/pkgs/development/libraries/fontconfig-ultimate/default.nix
+++ b/pkgs/development/libraries/fontconfig-ultimate/default.nix
@@ -11,8 +11,6 @@ stdenv.mkDerivation {
     owner = "bohoomil";
   };
 
-  phases = "$prePhases unpackPhase installPhase $postPhases";
-
   installPhase = ''
     mkdir -p $out/etc/fonts/conf.d
     cp conf.d.infinality/*.conf $out/etc/fonts/conf.d