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-rw-r--r--guix/build/utils.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index fe2d82c99e..bf57564c80 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -1347,7 +1347,7 @@ not supported."
(lambda ()
(call-with-ascii-input-file prog
(lambda (p)
- (format out header)
+ (display header out)
(dump-port p out)
(close out)
(chmod template mode)