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-rw-r--r--guix/scripts/describe.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/guix/scripts/describe.scm b/guix/scripts/describe.scm
index e59502076c..d3203e9924 100644
--- a/guix/scripts/describe.scm
+++ b/guix/scripts/describe.scm
@@ -40,7 +40,7 @@
                 (lambda (opt name arg result)
                   (unless (member arg '("human" "channels"))
                     (leave (G_ "~a: unsupported output format~%") arg))
-                  (alist-cons 'format 'channels result)))
+                  (alist-cons 'format (string->symbol arg) result)))
         (option '(#\h "help") #f #f
                 (lambda args
                   (show-help)