diff --git a/pkgs/tools/misc/mktorrent/default.nix b/pkgs/tools/misc/mktorrent/default.nix
index 3200c7016b66..c62bd45fef8d 100644
--- a/pkgs/tools/misc/mktorrent/default.nix
+++ b/pkgs/tools/misc/mktorrent/default.nix
@@ -8,8 +8,9 @@ stdenv.mkDerivation {
     sha256 = "17qi3nfky240pq6qcmf5qg324mxm83vk9r3nvsdhsvinyqm5d3kg";
   };
 
-  makeFlags = "CFLAGS=-lgcc_s USE_PTHREADS=1 USE_OPENSSL=1 USE_LONG_OPTIONS=1" +
-    stdenv.lib.optionalString stdenv.isi686 " USE_LARGE_FILES=1";
+  makeFlags = "USE_PTHREADS=1 USE_OPENSSL=1 USE_LONG_OPTIONS=1"
+    + stdenv.lib.optionalString stdenv.isi686 " USE_LARGE_FILES=1"
+    + stdenv.lib.optionalString stdenv.isLinux "CFLAGS=-lgcc_s";
 
   preInstall = ''
     installFlags=PREFIX=$out
@@ -21,7 +22,7 @@ stdenv.mkDerivation {
     homepage = http://mktorrent.sourceforge.net/;
     license = stdenv.lib.licenses.gpl2Plus;
     description = "Command line utility to create BitTorrent metainfo files";
-    platforms = with stdenv.lib.platforms; linux;
+    platforms = with stdenv.lib.platforms; unix;
     maintainers = with stdenv.lib.maintainers; [viric];
   };
 }