diff --git a/pkgs/data/themes/canta/default.nix b/pkgs/data/themes/canta/default.nix
index 8534fe7a506..c6a6678b98c 100644
--- a/pkgs/data/themes/canta/default.nix
+++ b/pkgs/data/themes/canta/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
     description = "Flat Design theme for GTK based desktop environments";
     homepage = "https://github.com/vinceliuice/Canta-theme";
     license = licenses.gpl2;
-    platforms = platforms.unix;
+    platforms = platforms.linux; # numix-icon-theme-circle unavailable in darwin
     maintainers = [ maintainers.romildo ];
   };
 }