diff --git a/pkgs/data/icons/numix-icon-theme-circle/default.nix b/pkgs/data/icons/numix-icon-theme-circle/default.nix
index 83166105209d..5ac0998fb291 100644
--- a/pkgs/data/icons/numix-icon-theme-circle/default.nix
+++ b/pkgs/data/icons/numix-icon-theme-circle/default.nix
@@ -31,7 +31,8 @@ stdenv.mkDerivation rec {
     description = "Numix icon theme (circle version)";
     homepage = https://numixproject.org;
     license = licenses.gpl3;
-    platforms = platforms.all;
+    # darwin cannot deal with file names differing only in case
+    platforms = platforms.linux;
     maintainers = with maintainers; [ jgeerds ];
   };
 }