diff --git a/Formula/calc.rb b/Formula/calc.rb
index 63a0ae8185..c76d251081 100644
--- a/Formula/calc.rb
+++ b/Formula/calc.rb
@@ -1,9 +1,7 @@
-require "formula"
-
 class Calc < Formula
   homepage "http://www.isthe.com/chongo/tech/comp/calc/"
-  url "http://www.isthe.com/chongo/src/calc/calc-2.12.4.14.tar.bz2"
-  sha1 "352192be34fc9c5194fffe94b8aef71dae15c2cb"
+  url "http://www.isthe.com/chongo/src/calc/calc-2.12.5.0.tar.bz2"
+  sha1 "65e5a6c77f7f5f3a500959a5deafd1b89a356335"
 
   depends_on "readline"