diff --git a/Library/Homebrew/extend/os/mac/diagnostic.rb b/Library/Homebrew/extend/os/mac/diagnostic.rb
index 6cc02f7c0de8e..660c3b0ee1146 100644
--- a/Library/Homebrew/extend/os/mac/diagnostic.rb
+++ b/Library/Homebrew/extend/os/mac/diagnostic.rb
@@ -130,13 +130,14 @@ def check_for_unsupported_macos
 
         def check_for_opencore
           return if ::Hardware::CPU.physical_cpu_arm64?
-          return if ENV["CI"]
 
           # https://dortania.github.io/OpenCore-Legacy-Patcher/UPDATE.html#checking-oclp-and-opencore-versions
           begin
             opencore_version = Utils.safe_popen_read("/usr/sbin/nvram",
                                                      "4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102:opencore-version").split[1]
-            return if opencore_version.blank?
+            oclp_version = Utils.safe_popen_read("/usr/sbin/nvram",
+                                                 "4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102:oclp-version").split[1]
+            return if opencore_version.blank? || oclp_version.blank?
           rescue ErrorDuringExecution
             return
           end