diff --git a/Library/Homebrew/utils/service.rb b/Library/Homebrew/utils/service.rb
index edd6deb524a5c..ceb8cd36e2bf2 100644
--- a/Library/Homebrew/utils/service.rb
+++ b/Library/Homebrew/utils/service.rb
@@ -25,6 +25,7 @@ def self.installed?(formula)
     sig { returns(T.nilable(Pathname)) }
     def self.launchctl
       return @launchctl if defined? @launchctl
+      return if ENV["HOMEBREW_TEST_GENERIC_OS"]
 
       @launchctl = which("launchctl")
     end
@@ -33,6 +34,7 @@ def self.launchctl
     sig { returns(T.nilable(Pathname)) }
     def self.systemctl
       return @systemctl if defined? @systemctl
+      return if ENV["HOMEBREW_TEST_GENERIC_OS"]
 
       @systemctl = which("systemctl")
     end