diff --git a/Library/Homebrew/exceptions.rb b/Library/Homebrew/exceptions.rb
index 9dbb894498..4e1d0387f9 100644
--- a/Library/Homebrew/exceptions.rb
+++ b/Library/Homebrew/exceptions.rb
@@ -95,6 +95,8 @@ class FormulaOrCaskUnavailableError < RuntimeError
 
   sig { returns(String) }
   def did_you_mean
+    require "formula"
+
     similar_formula_names = Formula.fuzzy_search(name)
     return "" if similar_formula_names.blank?