diff --git a/Library/Homebrew/dev-cmd/bump-formula-pr.rb b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
index 55ae1ae72857dd02064558d83bf8e510db228397..e45aa9398d059dee2f55a75ba54f114b03dfacd6 100644
--- a/Library/Homebrew/dev-cmd/bump-formula-pr.rb
+++ b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
@@ -25,7 +25,7 @@ module Homebrew
     else
       [:stable, formula.stable]
     end
-    odie "#{formula}: no #{requested_spec} specification found!" unless formula
+    odie "#{formula}: no #{requested_spec} specification found!" unless formula_spec
 
     hash_type, old_hash = if (checksum = formula_spec.checksum)
       [checksum.hash_type.to_s, checksum.hexdigest]