diff --git a/core/cli/upgrade.el b/core/cli/upgrade.el
index 03adfa2f5..197e183c3 100644
--- a/core/cli/upgrade.el
+++ b/core/cli/upgrade.el
@@ -82,5 +82,4 @@ Doing so is equivalent to:
            (message "%s Aborting." (error-message-string e)))
           (error
            (message "There was an unexpected error.\n\n%s\n\nOutput:\n%s"
-                    (car e)
-                    (buffer-string))))))))
+                    e (buffer-string))))))))