diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index 3d3c5e5dc1..8108c5da0b 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -786,7 +786,6 @@ module Homebrew
           EOS
         end
 
-        return if ENV["CI"]
         head = coretap_path.git_head
         return if head.nil? || head =~ %r{refs/heads/master}