diff --git a/Library/Homebrew/install.rb b/Library/Homebrew/install.rb
index 53c28b6b52..48b9acb362 100644
--- a/Library/Homebrew/install.rb
+++ b/Library/Homebrew/install.rb
@@ -231,7 +231,7 @@ module Homebrew
         false
       end
 
-      def formulae_installer(
+      def formula_installers(
         formulae_to_install,
         installed_on_request: true,
         installed_as_dependency: false,
diff --git a/Library/Homebrew/upgrade.rb b/Library/Homebrew/upgrade.rb
index 4bbb821c7c..ade0a24dbf 100644
--- a/Library/Homebrew/upgrade.rb
+++ b/Library/Homebrew/upgrade.rb
@@ -13,7 +13,7 @@ module Homebrew
   module Upgrade
     Dependents = Struct.new(:upgradeable, :pinned, :skipped)
 
-    def self.formulae_installer(
+    def self.formula_installers(
       formulae_to_install,
       flags:,
       dry_run: false,