diff --git a/pkgs/servers/monitoring/plugins/esxi.nix b/pkgs/servers/monitoring/plugins/esxi.nix
index 1ca9e702e7ad..ccd77548c0c0 100644
--- a/pkgs/servers/monitoring/plugins/esxi.nix
+++ b/pkgs/servers/monitoring/plugins/esxi.nix
@@ -6,6 +6,7 @@ let
 in python3Packages.buildPythonApplication rec {
   pname = lib.replaceStrings [ "_" ] [ "-" ] bName;
   version = "20200710";
+  format = "other";
 
   src = fetchFromGitHub {
     owner  = "Napsty";