diff --git a/main.js b/main.js
index d33927c..53cef8a 100644
--- a/main.js
+++ b/main.js
@@ -580,7 +580,7 @@ client.login("m.login.password", {"user": settings.matrixuser, "password": setti
                                     event.getContent().url,
                                     event.getContent().info.mimetype,
                                     function () {
-                                        client.sendReadReceipt(event, sdk.ReceiptType.Read);
+                                        client.sendReadReceipt(event, "m.read");
                                     });
                             break;
                         case "m.text":
@@ -590,7 +590,7 @@ client.login("m.login.password", {"user": settings.matrixuser, "password": setti
                                     from,
                                     event.getContent().body,
                                     function () {
-                                        client.sendReadReceipt(event, sdk.ReceiptType.Read);
+                                        client.sendReadReceipt(event, "m.read");
                                     });
                             break;
                     }
@@ -609,7 +609,7 @@ client.login("m.login.password", {"user": settings.matrixuser, "password": setti
                                     event.getContent().url,
                                     event.getContent().info.mimetype,
                                     function () {
-                                        client.sendReadReceipt(event, sdk.ReceiptType.Read);
+                                        client.sendReadReceipt(event, "m.read");
                                     });
                             break;
                         case "m.text":
@@ -619,7 +619,7 @@ client.login("m.login.password", {"user": settings.matrixuser, "password": setti
                                     from,
                                     event.getContent().body,
                                     function () {
-                                        client.sendReadReceipt(event, sdk.ReceiptType.Read);
+                                        client.sendReadReceipt(event, "m.read");
                                     });
                             break;
                     }
@@ -639,13 +639,13 @@ client.login("m.login.password", {"user": settings.matrixuser, "password": setti
                         sendMMS(tel, settings.smsfrom, event.getContent().url,
                                 event.getContent().info.mimetype,
                                 function () {
-                                    client.sendReadReceipt(event, sdk.ReceiptType.Read);
+                                    client.sendReadReceipt(event, "m.read");
                                 });
                         break;
                     case "m.text":
                     default:
                         sendSMS(tel, settings.smsfrom, event.getContent().body, function () {
-                            client.sendReadReceipt(event, sdk.ReceiptType.Read);
+                            client.sendReadReceipt(event, "m.read");
                         });
                         break;
                 }
@@ -660,13 +660,13 @@ client.login("m.login.password", {"user": settings.matrixuser, "password": setti
                         sendMMS(tel, from, event.getContent().url,
                                 event.getContent().info.mimetype,
                                 function () {
-                                    client.sendReadReceipt(event, sdk.ReceiptType.Read);
+                                    client.sendReadReceipt(event, "m.read");
                                 });
                         break;
                     case "m.text":
                     default:
                         sendSMS(tel, settings.smsfrom, event.getContent().body, function () {
-                            client.sendReadReceipt(event, sdk.ReceiptType.Read);
+                            client.sendReadReceipt(event, "m.read");
                         });
                         break;
                 }