diff --git a/Library/Homebrew/build.rb b/Library/Homebrew/build.rb
index 0aa8099345..0c890c346a 100644
--- a/Library/Homebrew/build.rb
+++ b/Library/Homebrew/build.rb
@@ -160,7 +160,7 @@ class Build
     end
     Keg.new(path).optlink
   rescue StandardError
-    raise "#{f.opt_prefix} not present or broken\nPlease reinstall #{f.name}. Sorry :("
+    raise "#{f.opt_prefix} not present or broken\nPlease reinstall #{f.full_name}. Sorry :("
   end
 end