diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index b766e2fe7f..1de9699396 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -254,7 +254,8 @@ end
 def dump_build_env env
   puts "\"--use-llvm\" was specified" if ARGV.include? '--use-llvm'
 
-  %w[CC CXX LD CFLAGS CXXFLAGS CPPFLAGS LDFLAGS MACOSX_DEPLOYMENT_TARGET MAKEFLAGS PKG_CONFIG_PATH HOMEBREW_USE_LLVM].each do |k|
+  %w[ CC CXX LD CFLAGS CXXFLAGS CPPFLAGS LDFLAGS MACOSX_DEPLOYMENT_TARGET MAKEFLAGS PKG_CONFIG_PATH
+      HOMEBREW_DEBUG HOMEBREW_VERBOSE HOMEBREW_USE_LLVM ].each do |k|
     value = env[k]
     puts "#{k}: #{value}" if value
   end