diff --git a/Library/Homebrew/test/spec_helper.rb b/Library/Homebrew/test/spec_helper.rb
index 5726204417..ea57b47c22 100644
--- a/Library/Homebrew/test/spec_helper.rb
+++ b/Library/Homebrew/test/spec_helper.rb
@@ -3,22 +3,17 @@
 
 if ENV["HOMEBREW_TESTS_COVERAGE"]
   require "simplecov"
+  require "simplecov_json_formatter"
 
-  formatters = [SimpleCov::Formatter::HTMLFormatter]
-  if RUBY_PLATFORM[/darwin/]
-    require "simplecov_json_formatter"
+  formatters = [SimpleCov::Formatter::HTMLFormatter, SimpleCov::Formatter::JSONFormatter]
+  SimpleCov.formatters = SimpleCov::Formatter::MultiFormatter.new(formatters)
 
-    formatters << SimpleCov::Formatter::JSONFormatter
-
-    if ENV["TEST_ENV_NUMBER"]
-      SimpleCov.at_exit do
-        result = SimpleCov.result
-        result.format! if ParallelTests.number_of_running_processes <= 1
-      end
+  if RUBY_PLATFORM[/darwin/] && ENV["TEST_ENV_NUMBER"]
+    SimpleCov.at_exit do
+      result = SimpleCov.result
+      result.format! if ParallelTests.number_of_running_processes <= 1
     end
   end
-
-  SimpleCov.formatters = SimpleCov::Formatter::MultiFormatter.new(formatters)
 end
 
 require "rspec/its"