diff --git a/MANIFEST b/MANIFEST
index 49a77b01d6..df012bae35 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -104,7 +104,6 @@ ext/Setup.dj
 ext/Setup.emx
 ext/Setup.nt
 ext/Setup.x68
-ext/configsub.rb
 ext/extmk.rb
 lib/English.rb
 lib/Env.rb