diff --git a/README.org b/README.org
index 776e6ef..9491436 100644
--- a/README.org
+++ b/README.org
@@ -3492,7 +3492,8 @@ Set `org-latex-engraved-preamble' to define a Breakable (non-floating)
 environment and an unbreakable Code (floating) environment."
   (unless (string-match "^\\\\DeclareTColorBox\\[\\]{Breakable}"
                         org-latex-engraved-preamble)
-    (user-error "`org-latex-engraved-preamble' defines no `Breakable' environment"))
+    (user-error
+     "`org-latex-engraved-preamble' defines no `Breakable' environment"))
   (when (eq org-latex-src-block-backend 'engraved)
     ;; Transform only blocks matching at position 0.  Therefore, do
     ;; not transform blocks that are listing environments.