diff --git a/module/web/server/http.scm b/module/web/server/http.scm
index 05bf46bf0..c5c393fc6 100644
--- a/module/web/server/http.scm
+++ b/module/web/server/http.scm
@@ -65,7 +65,8 @@
                     (port 8080)
                     (socket (make-default-socket family addr port)))
   (listen socket 128)
-  (sigaction SIGPIPE SIG_IGN)
+  (when (defined? 'SIGPIPE)
+    (sigaction SIGPIPE SIG_IGN))
   (let ((poll-set (make-empty-poll-set)))
     (poll-set-add! poll-set socket *events*)
     (make-http-server socket 0 poll-set)))