diff --git a/gopher-server.rb b/gopher-server.rb
index e0652cc..88586a4 100644
--- a/gopher-server.rb
+++ b/gopher-server.rb
@@ -15,7 +15,8 @@ TEXT = {
     ".h" => true,
     ".txt" => true,
     ".text" => true,
-    ".rb" => true
+    ".rb" => true,
+    '.mk' => true
 }
 
 def do_error(client, message)