diff --git a/Library/Homebrew/cmd/doctor.rb b/Library/Homebrew/cmd/doctor.rb
index 13657b0aee9d85d6050791c376239f53dceb0731..dca685904a626a24fd3dc4cdd7c89920e97f7bbd 100644
--- a/Library/Homebrew/cmd/doctor.rb
+++ b/Library/Homebrew/cmd/doctor.rb
@@ -353,7 +353,7 @@ def check_user_path
   end
 
   # Don't complain about sbin not being in the path if it doesn't exist
-  if (HOMEBREW_PREFIX+'sbin').children.count > 0
+  if (HOMEBREW_PREFIX+'sbin').children.length > 0
     unless seen_prefix_sbin
       puts <<-EOS.undent
         Some brews install binaries to sbin instead of bin, but Homebrew's