diff --git a/Formula/cartesi-machine.rb b/Formula/cartesi-machine.rb
index 6d5a3d9..270bd92 100644
--- a/Formula/cartesi-machine.rb
+++ b/Formula/cartesi-machine.rb
@@ -13,7 +13,7 @@ class CartesiMachine < Formula
   depends_on "lua" => :build
   depends_on "openssl" => :build
 
-  patch do
+  patch :p0 do
     url "https://github.com/cartesi/machine-emulator/releases/download/v0.18.1/add-generated-files.diff"
     sha256 "5e239448f47fe33b9c13e6c4c9c605ac16b8663f396909cd57abd6e4b447f1c4"
   end