diff --git a/lisp/emacs-lisp/pcase.el b/lisp/emacs-lisp/pcase.el
index 5a7f3995311..f546ba34c7c 100644
--- a/lisp/emacs-lisp/pcase.el
+++ b/lisp/emacs-lisp/pcase.el
@@ -241,9 +241,10 @@ pcase-exhaustive
 ;;;###autoload
 (defmacro pcase-lambda (lambda-list &rest body)
   "Like `lambda' but allow each argument to be a pattern.
-I.e. accepts the usual &optional and &rest keywords, but every
-formal argument can be any pattern accepted by `pcase' (a mere
-variable name being but a special case of it)."
+I.e. accepts the usual &optional and &rest keywords, but every formal
+argument can be any pattern accepted by `pcase' (a mere variable name
+being but a special case of it).  Keep in mind that BODY is always
+evaluated, regardless of whether the argument-patterns match or not."
   (declare (doc-string 2) (indent defun)
            (debug (&define (&rest pcase-PAT) lambda-doc def-body)))
   (let* ((bindings ())