diff --git a/Library/Homebrew/cmd/search.rb b/Library/Homebrew/cmd/search.rb
index 526c7220d6..2a100083d1 100644
--- a/Library/Homebrew/cmd/search.rb
+++ b/Library/Homebrew/cmd/search.rb
@@ -83,7 +83,7 @@ module Homebrew
     end
 
     if $stdout.tty?
-      metacharacters = %w[\\ | ( ) [ ] { } ^ $ * + ? .]
+      metacharacters = %w[\\ | ( ) [ ] { } ^ $ * + ?]
       bad_regex = metacharacters.any? do |char|
         ARGV.any? do |arg|
           arg.include?(char) && !arg.start_with?("/")