diff --git a/pkgs/tools/networking/bgpdump/default.nix b/pkgs/tools/networking/bgpdump/default.nix
index f60b60c3992..5e98228da2e 100644
--- a/pkgs/tools/networking/bgpdump/default.nix
+++ b/pkgs/tools/networking/bgpdump/default.nix
@@ -11,6 +11,10 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-1HXMf9mHManR7jhonU2Agon0YFXOlM9APIN1Zm840AM=";
   };
 
+  postPatch = ''
+    substituteInPlace Makefile.in --replace 'ar r libbgpdump.a' '$(AR) r libbgpdump.a'
+  '';
+
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ zlib bzip2 ];