diff --git a/Library/Homebrew/checksums.rb b/Library/Homebrew/checksum.rb
similarity index 100%
rename from Library/Homebrew/checksums.rb
rename to Library/Homebrew/checksum.rb
diff --git a/Library/Homebrew/formula_support.rb b/Library/Homebrew/formula_support.rb
index bbc82396d0..9aa6358087 100644
--- a/Library/Homebrew/formula_support.rb
+++ b/Library/Homebrew/formula_support.rb
@@ -1,5 +1,5 @@
 require 'download_strategy'
-require 'checksums'
+require 'checksum'
 require 'version'
 
 class SoftwareSpec