diff --git a/pkgs/development/libraries/sentencepiece/default.nix b/pkgs/development/libraries/sentencepiece/default.nix
index 03b7da63fa7..7aeb77a1ece 100644
--- a/pkgs/development/libraries/sentencepiece/default.nix
+++ b/pkgs/development/libraries/sentencepiece/default.nix
@@ -18,7 +18,9 @@ stdenv.mkDerivation rec {
     hash = "sha256-xpVihdSpjO/mJWM5nzVg9CND3oAEdfCwXQW0jqLVDBA=";
   };
 
-  nativeBuildInputs = [ cmake ] ++ lib.optional withGPerfTools gperftools;
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = lib.optionals withGPerfTools [ gperftools ];
 
   outputs = [ "bin" "dev" "out" ];