diff --git a/distro.scm b/distro.scm
index fc48285bbf..f697ad3601 100644
--- a/distro.scm
+++ b/distro.scm
@@ -67,7 +67,7 @@ (define prefix-len
                     (const #f)                    ; skip
                     (lambda (path stat errno result)
                       (format (current-error-port)
-                              (_ "warning: cannot access `~a': ~a")
+                              (_ "warning: cannot access `~a': ~a~%")
                               path (strerror errno))
                       result)
                     '()