diff --git a/lib/service/formula_wrapper.rb b/lib/service/formula_wrapper.rb
index efbe242ef..5efdac93f 100644
--- a/lib/service/formula_wrapper.rb
+++ b/lib/service/formula_wrapper.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "system_command"
+
 # Wrapper for a formula to handle service-related stuff like parsing and
 # generating the service/plist files.
 module Service