diff --git a/pkgs/tools/backup/duply/default.nix b/pkgs/tools/backup/duply/default.nix
index affedcae73a0..5e95ede695cd 100644
--- a/pkgs/tools/backup/duply/default.nix
+++ b/pkgs/tools/backup/duply/default.nix
@@ -34,6 +34,6 @@ stdenv.mkDerivation {
     homepage = http://duply.net/;
     license = licenses.gpl2;
     maintainers = [ maintainers.bjornfor ];
-    platforms = platforms.unix;
+    platforms = platforms.linux;
   };
 }