diff --git a/tools/web_monitor/templates/index.html b/tools/web_monitor/templates/index.html
index 8ce2e32c..a555567e 100644
--- a/tools/web_monitor/templates/index.html
+++ b/tools/web_monitor/templates/index.html
@@ -10,7 +10,7 @@
 
 <script>
 if (!window.WebSocket) alert("WebSocket not supported by this browser");
-var ws = new WebSocket("ws://{{request.url.hostname}}:{{request.url.port}}/dashboard/ws");
+var ws = new WebSocket("ws://{{request.url.hostname}}:{% if request.port %}{{request.url.port}}{% else %}80{% endif %}/dashboard/ws");
 let all_data = []
 let all_labels = []
 ws.onmessage = function(event) {
diff --git a/tools/web_monitor/templates/miner.html b/tools/web_monitor/templates/miner.html
index 030d2bc6..e6911e04 100644
--- a/tools/web_monitor/templates/miner.html
+++ b/tools/web_monitor/templates/miner.html
@@ -91,7 +91,7 @@
 </div>
 
 <script>
-var ws = new WebSocket("ws://{{request.url.hostname}}:{{request.url.port}}/miner/{{miner}}/ws");
+var ws = new WebSocket("ws://{{request.url.hostname}}:{% if request.port %}{{request.url.port}}{% else %}80{% endif %}/miner/{{miner}}/ws");
 let all_data = []
 let all_labels = []
 ws.onmessage = function(event) {