diff --git a/src/main.rs b/src/main.rs
index dfcf743..ffc55a6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -55,7 +55,8 @@ fn index() -> Html<&'static str> {
             sendForm.hidden = false;
             msgsArea.hidden = false;
             msgInput.focus();
-            ws = new WebSocket("ws://" + window.location.host + "/api/ws");
+            let protocol = window.location.protocol == "https:" ? "wss://" : "ws://";
+            ws = new WebSocket(protocol + window.location.host + "/api/ws");
             ws.onmessage = function(event) {
                 msgsArea.value += event.data + "\r\n";
             }