diff --git a/mu4e/mu4e-draft.el b/mu4e/mu4e-draft.el
index 852e3ab4..6cecb9b6 100644
--- a/mu4e/mu4e-draft.el
+++ b/mu4e/mu4e-draft.el
@@ -53,12 +53,10 @@ messages. This is the mu4e-specific version of
   :group 'mu4e-compose)
 
 (defcustom mu4e-compose-signature
-  (or (and (stringp message-signature) message-signature)
-    "Sent with my mu4e")
+  (or message-signature "Sent with my mu4e")
   "The message signature (i.e. the blob at the bottom of
 messages). This is the mu4e-specific version of
 `message-signature'."
-  :type 'sexp
   :group 'mu4e-compose)
 
 (defcustom mu4e-compose-signature-auto-include t