1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 56c2966656c..fed91b34a88 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -224,7 +224,8 @@
   ;; FIXME: Move to elisp-mode.el.
   (catch 'found
     (while (re-search-forward
-            (eval-when-compile "(\\(" lisp-mode-symbol-regexp "\\)\\_>")
+            (eval-when-compile
+              (concat "(\\(" lisp-mode-symbol-regexp "\\)\\_>"))
             limit t)
       (let ((sym (intern-soft (match-string 1))))
         (when (or (special-form-p sym)