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-rw-r--r--gnu/packages/mail.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index 2393ea2ea8..6488dd00f0 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -517,7 +517,7 @@ and corrections. It is based on a Bayesian filter.")
(substitute* "docs/Makefile"
;; Prevent xmllint and xsltproc from downloading a DTD file.
(("a2x -v") "a2x --no-xmllint --xsltproc-opts=--nonet -v"))
- (zero? (system* "make" "-C" "docs" "man"))))
+ (invoke "make" "-C" "docs" "man")))
(add-after 'install 'install-documentation
(lambda* (#:key outputs #:allow-other-keys)
(let* ((out (assoc-ref outputs "out"))