diff --git a/Library/Homebrew/search.rb b/Library/Homebrew/search.rb
index fc73988fdd..45906d0150 100644
--- a/Library/Homebrew/search.rb
+++ b/Library/Homebrew/search.rb
@@ -87,7 +87,7 @@ module Homebrew
                 .search(string_or_regex)
                 .sort
 
-      results += Formula.fuzzy_search(string_or_regex)
+      results |= Formula.fuzzy_search(string_or_regex)
 
       results.map do |name|
         formula, canonical_full_name = begin