diff --git a/udp-operations-sig.rkt b/udp-operations-sig.rkt
deleted file mode 100644
index 4ff494e..0000000
--- a/udp-operations-sig.rkt
+++ /dev/null
@@ -1,7 +0,0 @@
-#lang racket/signature
-
-udp-open-socket ;; host port -> socket
-udp-close ;; socket -> void
-udp-bind! ;; socket host port -> void
-udp-send-to ;; socket host port bytes -> void
-udp-receive/timeout ;; socket bytes seconds -> (or (list non-negative-integer host port) #f)