diff --git a/runtime/spell/fo/main.aap b/runtime/spell/fo/main.aap
index 948d4a4..b9be542 100644
--- a/runtime/spell/fo/main.aap
+++ b/runtime/spell/fo/main.aap
@@ -35,6 +35,7 @@
         :fetch fo_FO.zip
         :sys $UNZIP fo_FO.zip
         :delete fo_FO.zip
+        :delete contributors fo_FO.excluded Makefile COPYING
         @if not os.path.exists('fo_FO.orig.aff'):
             :copy fo_FO.aff fo_FO.orig.aff
         @if not os.path.exists('fo_FO.orig.dic'):