diff --git a/packages/gramine/default.nix b/packages/gramine/default.nix
index 9fcb433..97224a5 100644
--- a/packages/gramine/default.nix
+++ b/packages/gramine/default.nix
@@ -15,6 +15,7 @@
 , gawk
 , bison
 , patchelf
+, protobufc
 , which
 }:
 let
@@ -96,7 +97,7 @@ python.pkgs.buildPythonPackage {
     cmake
     pkg-config
     nixsgx.sgx-sdk
-    nixsgx.protobufc
+    protobufc
     nixsgx.sgx-dcap.dev
     nixsgx.sgx-dcap.quote_verify
     autoconf
@@ -108,8 +109,8 @@ python.pkgs.buildPythonPackage {
   ];
 
   buildInputs = [
-    nixsgx.protobufc.dev
-    nixsgx.protobufc.lib
+    protobufc.dev
+    protobufc.lib
     bash
   ];
 
diff --git a/packages/protobufc/default.nix b/packages/protobufc/default.nix
deleted file mode 100644
index 94f96eb..0000000
--- a/packages/protobufc/default.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-{ lib
-, stdenv
-, fetchFromGitHub
-, fetchpatch
-, autoreconfHook
-, pkg-config
-, protobuf
-, zlib
-, buildPackages
-}:
-
-stdenv.mkDerivation rec {
-  pname = "protobuf-c";
-  version = "1.5.0";
-
-  src = fetchFromGitHub {
-    owner = "protobuf-c";
-    repo = "protobuf-c";
-    rev = "refs/tags/v${version}";
-    hash = "sha256-Dkpcc7ZfvAIVY91trRiHuiRFcUGUbQxbheYKTBcq80I=";
-  };
-
-  outputs = [ "out" "dev" "lib" ];
-
-  nativeBuildInputs = [ autoreconfHook pkg-config ];
-
-  buildInputs = [ protobuf zlib ];
-
-  PROTOC = lib.getExe buildPackages.protobuf;
-
-  meta = with lib; {
-    homepage = "https://github.com/protobuf-c/protobuf-c/";
-    description = "C bindings for Google's Protocol Buffers";
-    license = licenses.bsd2;
-    platforms = platforms.all;
-    maintainers = with maintainers; [ nickcao ];
-  };
-}