1 files changed, 3 insertions, 2 deletions

diff --git a/lisp/emacs-lisp/disass.el b/lisp/emacs-lisp/disass.el
index d405db4200e..4199728888e 100644
--- a/lisp/emacs-lisp/disass.el
+++ b/lisp/emacs-lisp/disass.el
@@ -104,8 +104,9 @@ redefine OBJECT if it is a symbol."
            (setq obj (cdr obj))         ;throw lambda away
            (setq args (car obj))        ;save arg list
            (setq obj (cdr obj)))
-          (t
-           (setq args (aref obj 0))))
+          ((byte-code-function-p obj)
+           (setq args (aref obj 0)))
+          (t (error "Compilation failed")))
     (if (zerop indent) ; not a nested function
         (progn
           (indent-to indent)