diff --git a/Library/Homebrew/cmd/doctor.rb b/Library/Homebrew/cmd/doctor.rb
index 969572e1562a9b71877834a56f0a91bb31580f80..32f3f5288aeac9acca9527322bc886505a5cf0c4 100644
--- a/Library/Homebrew/cmd/doctor.rb
+++ b/Library/Homebrew/cmd/doctor.rb
@@ -743,9 +743,8 @@ def check_git_newline_settings
   return unless which "git"
 
   autocrlf = `git config --get core.autocrlf`.chomp
-  safecrlf = `git config --get core.safecrlf`.chomp
 
-  if !autocrlf.empty? && autocrlf != 'false' then <<-EOS.undent
+  if autocrlf == 'true' then <<-EOS.undent
     Suspicious Git newline settings found.
 
     The detected Git newline settings will cause checkout problems:
@@ -753,7 +752,7 @@ def check_git_newline_settings
 
     If you are not routinely dealing with Windows-based projects,
     consider removing these by running:
-    `git config --global --set core.autocrlf false`
+    `git config --global --set core.autocrlf input`
     EOS
   end
 end