diff --git a/pkgs/applications/misc/ptask/default.nix b/pkgs/applications/misc/ptask/default.nix
index 6cbc90806ca..81e316eb0ee 100644
--- a/pkgs/applications/misc/ptask/default.nix
+++ b/pkgs/applications/misc/ptask/default.nix
@@ -25,5 +25,6 @@ stdenv.mkDerivation rec {
     description = "GTK-based GUI for taskwarrior";
     license = licenses.gpl2;
     maintainers = [ maintainers.spacefrogg ];
+    platforms = platforms.linux;
   };
 }