diff --git a/pkgs/tools/backup/duply/default.nix b/pkgs/tools/backup/duply/default.nix
index a055b87c263..7917403a915 100644
--- a/pkgs/tools/backup/duply/default.nix
+++ b/pkgs/tools/backup/duply/default.nix
@@ -35,6 +35,6 @@ stdenv.mkDerivation {
     homepage = http://duply.net/;
     license = licenses.gpl2;
     maintainers = [ maintainers.bjornfor ];
-    platforms = platforms.linux;
+    platforms = stdenv.lib.platforms.unix;
   };
 }