diff --git a/Manifest.txt b/Manifest.txt
index a52fc196e58287a8a9295eabd655c2e21cee2625..9a6c6d520e7a9eae2a4ce2da16bb61477aeefca4 100644
--- a/Manifest.txt
+++ b/Manifest.txt
@@ -1182,6 +1182,7 @@ test/TC_FXVec3d.rb
 test/TC_FXVec3f.rb
 test/TC_FXVec4f.rb
 test/TC_FXViewport.rb
+test/TC_FXWindow.rb
 test/TC_FXXBMIcon.rb
 test/TC_FXXBMImage.rb
 test/TC_FXXPMIcon.rb