diff --git a/pkgs/development/libraries/ocl-icd/default.nix b/pkgs/development/libraries/ocl-icd/default.nix
index 9c024862197f..75dda07494d9 100644
--- a/pkgs/development/libraries/ocl-icd/default.nix
+++ b/pkgs/development/libraries/ocl-icd/default.nix
@@ -9,7 +9,9 @@ stdenv.mkDerivation rec {
     sha256 = "0f14gpa13sdm0kzqv5yycp4pschbmi6n5fj7wl4ilspzsrqcgqr2";
   };
 
-  buildInputs = [ ruby opencl-headers ];
+  nativeBuildInputs = [ ruby ];
+
+  buildInputs = [ opencl-headers ];
 
   postPatch = ''
     sed -i 's,"/etc/OpenCL/vendors","${mesa_noglu.driverLink}/etc/OpenCL/vendors",g' ocl_icd_loader.c