diff --git a/Library/Homebrew/tap.rb b/Library/Homebrew/tap.rb
index c3fbc5f733..4396e3ea9e 100644
--- a/Library/Homebrew/tap.rb
+++ b/Library/Homebrew/tap.rb
@@ -150,7 +150,6 @@ class Tap
     @full_name = "#{@user}/homebrew-#{@repo}"
     @path = TAP_DIRECTORY/@full_name.downcase
     @git_repo = GitRepository.new(@path)
-    @alias_table = nil
     @alias_reverse_table = nil
   end
 
@@ -715,17 +714,14 @@ class Tap
     @aliases ||= alias_table.keys
   end
 
-  # a table mapping alias to formula name
+  # Mapping from aliases to formula names.
+  #
   # @private
   sig { returns(T::Hash[String, String]) }
   def alias_table
-    return @alias_table if @alias_table
-
-    @alias_table = {}
-    alias_files.each do |alias_file|
-      @alias_table[alias_file_to_name(alias_file)] = formula_file_to_name(alias_file.resolved_path)
+    @alias_table ||= alias_files.each_with_object({}) do |alias_file, alias_table|
+      alias_table[alias_file_to_name(alias_file)] = formula_file_to_name(alias_file.resolved_path)
     end
-    @alias_table
   end
 
   # a table mapping formula name to aliases