diff --git a/background/feed-update.js b/background/feed-update.js
index 9b71187..917a86b 100644
--- a/background/feed-update.js
+++ b/background/feed-update.js
@@ -74,7 +74,7 @@ class Refresher {
 	}
 
 	refreshChannel(ucid) {
-		return fetch(`http://localhost:3000/api/v1/channels/${ucid}/latest`).then(res => res.json()).then(root => {
+		return fetch(`${constants.server_setup.local_instance_origin}/api/v1/channels/${ucid}/latest`).then(res => res.json()).then(root => {
 			if (Array.isArray(root)) {
 				root.forEach(video => {
 					// organise
diff --git a/utils/constants.js b/utils/constants.js
index e8d367e..380bf20 100644
--- a/utils/constants.js
+++ b/utils/constants.js
@@ -16,6 +16,10 @@ let constants = {
 		}
 	},
 
+	server_setup: {
+		local_instance_origin: "http://localhost:3000"
+	},
+
 	caching: {
 		csrf_time: 4*60*60*1000,
 		seen_token_subscriptions_eligible: 40*60*60*1000,