--- ext/tk/extconf.rb.orig	2013-08-22 00:39:29.000000000 +0900
+++ ext/tk/extconf.rb	2013-08-22 21:19:22.000000000 +0900
@@ -315,7 +315,7 @@
   paths.map{|dir| dir.strip.chomp('/')}.each{|dir|
     next unless File.exist?(File.join(dir, "Tcl.framework", "Headers"))
     next unless File.directory?(tcldir = File.join(dir, "Tcl.framework"))
-    next unless File.exist?(File.join(dir, "Tk.framework"), "Headers")
+    next unless File.exist?(File.join(dir, "Tk.framework", "Headers"))
     next unless File.directory?(tkdir  = File.join(dir, "Tk.framework"))
     TkLib_Config["tcltk-framework"] = dir
     return [tcldir, tkdir]