diff --git a/pkgs/applications/networking/mailreaders/mblaze/default.nix b/pkgs/applications/networking/mailreaders/mblaze/default.nix
index de82535cd560..fb852f76045d 100644
--- a/pkgs/applications/networking/mailreaders/mblaze/default.nix
+++ b/pkgs/applications/networking/mailreaders/mblaze/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
   version = "1.2";
 
   nativeBuildInputs = [ installShellFiles makeWrapper ];
-  buildInputs = [ ruby ] ++ lib.optionals stdenv.isDarwin [ libiconv ];
+  buildInputs = [ libiconv ruby ];
 
   src = fetchFromGitHub {
     owner = "leahneukirchen";