diff --git a/pkgs/tools/system/iops/default.nix b/pkgs/tools/system/iops/default.nix
index 300fe59a97d..03c1c85ea84 100644
--- a/pkgs/tools/system/iops/default.nix
+++ b/pkgs/tools/system/iops/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     homepage = http://www.vanheusden.com/iops/;
     license = licenses.gpl2;
     maintainers = with maintainers; davidak;
-    platforms = with platforms; unix;
+    platforms = with platforms; linux; # build problems on Darwin
   };
 }