diff --git a/pkgs/games/gnuchess/default.nix b/pkgs/games/gnuchess/default.nix
index db4961eaaf68..24556d83148e 100644
--- a/pkgs/games/gnuchess/default.nix
+++ b/pkgs/games/gnuchess/default.nix
@@ -1,4 +1,6 @@
-a :  
+{builderDefsPackage, flex} @ x:
+builderDefsPackage 
+(a :  
 let 
   fetchurl = a.fetchurl;
 
@@ -31,4 +33,4 @@ rec {
   meta = {
     description = "GNU Chess playing program";
   };
-}
+}) x
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index eddced94b89e..45ca9ed66e53 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6818,7 +6818,7 @@ let
 
   gltron = callPackage ../games/gltron { };
 
-  gnuchess = builderDefsPackage (import ../games/gnuchess) { };
+  gnuchess = callPackage ../games/gnuchess { };
 
   gnugo = callPackage ../games/gnugo { };