diff --git a/src/main/room/netplay/NetClient.js b/src/main/room/netplay/NetClient.js
index 84980d5..e6e0ba0 100644
--- a/src/main/room/netplay/NetClient.js
+++ b/src/main/room/netplay/NetClient.js
@@ -43,11 +43,11 @@ jt.NetClient = function(room) {
         wsOnly = false;
 
         if (ws) {
-            ws.onpen = ws.onclose = ws.onmessage = undefined;
+            ws.onopen = ws.onclose = ws.onmessage = undefined;
             ws.close();
             ws = undefined;
         }
-        if (dataChannel) dataChannel.onpen = dataChannel.onclose = dataChannel.onmessage = undefined;
+        if (dataChannel) dataChannel.onopen = dataChannel.onclose = dataChannel.onmessage = undefined;
         if (rtcConnection) rtcConnection.onicecandidate = rtcConnection.ondatachannel = undefined;
 
         dataChannelActive = false;
@@ -177,7 +177,7 @@ jt.NetClient = function(room) {
 
     function stopRTC() {
         if (dataChannel) {
-            dataChannel.onpen = dataChannel.onclose = dataChannel.onmessage = undefined;
+            dataChannel.onopen = dataChannel.onclose = dataChannel.onmessage = undefined;
             dataChannel.close();
             dataChannel = undefined;
         }
@@ -291,4 +291,4 @@ jt.NetClient.sendKeepAlive = function() {
         .finally(function() {
             if (Javatari.SERVER_KEEPALIVE > 0) setTimeout(jt.NetClient.sendKeepAlive, Javatari.SERVER_KEEPALIVE);
         });
-};
\ No newline at end of file
+};