diff --git a/Library/Homebrew/cmd/install.rb b/Library/Homebrew/cmd/install.rb
index 2b54844fcc6023698410992633ff369f277b70de..fd7aede8684924555fa4164b993866c0c12da9f1 100644
--- a/Library/Homebrew/cmd/install.rb
+++ b/Library/Homebrew/cmd/install.rb
@@ -241,7 +241,7 @@ module Homebrew
       end
 
       # Do not search taps if the formula name is qualified
-      return if e.name =~ %r{/}
+      return if e.name.include?("/")
       ohai "Searching taps..."
       taps_search_results = search_taps(query)
       case taps_search_results.length