diff --git a/build-emacs-for-osx b/build-emacs-for-osx
index 1e337ae..78d255b 100755
--- a/build-emacs-for-osx
+++ b/build-emacs-for-osx
@@ -46,7 +46,7 @@ end
 def patches(opts = {})
   p = []
 
-  if opt[:fullscreen]
+  if opts[:fullscreen]
     p << 'https://raw.github.com/gist/1746342/' +
       '702dfe9e2dd79fddd536aa90d561efdeec2ba716'
   end