(custom-theme-add-variable): Don't add `custom-enabled-themes'.

1 files changed, 2 insertions, 0 deletions

diff --git a/lisp/cus-theme.el b/lisp/cus-theme.el
index afb760a7d4e..502220d278d 100644
--- a/lisp/cus-theme.el
+++ b/lisp/cus-theme.el
@@ -160,6 +160,8 @@ the directory " custom-theme-directory "\n\n")
            (message "%s is already in the theme" (symbol-name symbol)))
           ((not (boundp symbol))
            (message "%s is not defined as a variable" (symbol-name symbol)))
+          ((eq symbol 'custom-enabled-themes)
+           (message "Custom theme cannot contain `custom-enabled-themes'"))
           (t
            (widget-insert "\n")
            (let ((widget (widget-create 'custom-variable