diff --git a/modules/lang/plantuml/config.el b/modules/lang/plantuml/config.el
index abc0b8091..31d00feeb 100644
--- a/modules/lang/plantuml/config.el
+++ b/modules/lang/plantuml/config.el
@@ -30,7 +30,7 @@
       (let* ((origin-body body)
              (fix-body
               (replace-regexp-in-string
-               "^\\w*\\(@start\\)"
+               "^[[:blank:]\n]*\\(@start\\)"
                "\\\\\\1"
                origin-body)))
         (list fix-body params))))