--- a/src/code/serve-event.lisp
+++ b/src/code/serve-event.lisp
@@ -279,8 +279,7 @@
 
 ;;; When a *periodic-polling-function* is defined the server will not
 ;;; block for more than the maximum event timeout and will call the
-;;; polling function if it does time out. One important use of this
-;;; is to periodically call process-yield.
+;;; polling function if it does time out.
 (declaim (type (or null function) *periodic-polling-function*))
 (defvar *periodic-polling-function* nil)
 (declaim (type (unsigned-byte 29) *max-event-to-sec* *max-event-to-usec*))