diff --git a/test/real_world/stdlib b/test/real_world/stdlib
index f131b19..2d74ebc 100755
--- a/test/real_world/stdlib
+++ b/test/real_world/stdlib
@@ -1,4 +1,7 @@
 #!/bin/env crystal
+
+{% skip_file unless flag?(:linux) %}
+
 require "colorize"
 
 PASS = "pass".colorize.green
@@ -63,7 +66,9 @@ end
 
 printf("%% of success: %.2f%%\n", pass / stdlib_files.size)
 
-File.write("#{__DIR__}/stdlib_failed.txt", failed.join("\n"))
 if failed != expected_fail
   abort("List of failed tests difer, check stdlib_failed.txt and stdlib_expected_to_fail.txt".colorize.red)
+
+  File.write("#{__DIR__}/stdlib_failed.txt", failed.join("\n"))
+  system("diff -u #{__DIR__}/stdlib_failed.txt #{__DIR__}/stdlib_failed.txt")
 end