diff --git a/pkgs/applications/networking/feedreaders/rsstail/default.nix b/pkgs/applications/networking/feedreaders/rsstail/default.nix
index cecad11a4f632..353d2beec02fc 100644
--- a/pkgs/applications/networking/feedreaders/rsstail/default.nix
+++ b/pkgs/applications/networking/feedreaders/rsstail/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, libmrss, libiconv }:
+{ lib, stdenv, fetchFromGitHub, libmrss }:
 
 stdenv.mkDerivation {
   pname = "rsstail";
@@ -11,10 +11,13 @@ stdenv.mkDerivation {
     sha256 = "12p69i3g1fwlw0bds9jqsdmzkid3k5a41w31d227i7vm12wcvjf6";
   };
 
-  buildInputs = [ libmrss ] ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ];
+  buildInputs = [ libmrss ];
 
-  postPatch = ''
-    substituteInPlace Makefile --replace -liconv_hook ""
+  postPatch = let
+    liconv = if stdenv.hostPlatform.isDarwin then "-liconv" else "";
+  in
+    ''
+    substituteInPlace Makefile --replace-fail -liconv_hook "${liconv}"
   '';
 
   makeFlags = [ "prefix=$(out)" ];