diff --git a/Library/Homebrew/cmd/bottle.rb b/Library/Homebrew/cmd/bottle.rb
index 847fff072a..4e99f3d83e 100644
--- a/Library/Homebrew/cmd/bottle.rb
+++ b/Library/Homebrew/cmd/bottle.rb
@@ -122,7 +122,7 @@ module Homebrew extend self
     filename = bottle_filename(f, :tag => bottle_tag, :revision => bottle_revision)
 
     if bottle_filename_formula_name(filename).empty?
-      return ofail "Add a new regex to bottle_version.rb to parse the bottle filename."
+      return ofail "Add a new regex to bottle_version.rb to parse #{f.version} from #{filename}"
     end
 
     bottle_path = Pathname.pwd/filename