diff --git a/web/webservice.scm b/web/webservice.scm
index 8193dda..0cc6ca4 100755
--- a/web/webservice.scm
+++ b/web/webservice.scm
@@ -51,4 +51,4 @@
 
 (run-server spe-handler
             'http
-            '(#:host "0.0.0.0"))
\ No newline at end of file
+            `(#:port ,(string->number (getenv "PORT"))))