diff --git a/.build.yml b/.build.yml
index 2699bad..437c860 100644
--- a/.build.yml
+++ b/.build.yml
@@ -35,7 +35,7 @@ tasks:
       sudo sh -c 'curl https://git.sr.ht/~nabijaczleweli/groff-1.23-unfucking/blob/trunk/mdoc.local >> /etc/groff/mdoc.local'
       git -C tzpfms/ worktree add ../tzpfms-man man
       cd tzpfms-man
-      git ls-tree -z --name-only HEAD | xargs -0 rm -r
+      git ls-tree -z --name-only HEAD | grep -z tpm | xargs -0 rm -r
       cp -pr ../tzpfms/out/man/* .
       sed -e 's/…/.../g' $(ls *.[12345678] | awk -F. '{print $2 "\t" $1}' | sort | awk -F'\t' '{print $2 "." $1}') | groff -K utf8 -tpe -mdoc -Tps -dpaper=a4 -P-pa4 > tzpfms.ps
       ps2pdf -sPAPERSIZE=a4 tzpfms.ps tzpfms.pdf