diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index a53458d7d912..c58bb4488cdd 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -72,6 +72,7 @@ package() {
 	# install completions, which for some crazy reason hardcode the filename
 	# used to invoke which is __main__.py if we use python -m poetry, and also
 	# adds the full directory path???
+	set -o pipefail
 	./poetry-completions-generator completions bash |
 		sed "#$srcdir#d" |
 		install -Dm644 /dev/stdin "$pkgdir/usr/share/bash-completion/completions/poetry"