diff --git a/client.go b/client.go
index c63af16..916ab40 100644
--- a/client.go
+++ b/client.go
@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"log"
+	"strings"
 
 	"maunium.net/go/mautrix"
 	"maunium.net/go/mautrix/id"
@@ -12,6 +13,8 @@ func newMatrixClient(config *botConfig) *mautrix.Client {
 	fmt.Println("Logging into", config.Homeserver, "as", config.Username)
 	var client *mautrix.Client
 	var err error
+	//make sure username is lower case otherwise token login breaks
+	uname := strings.ToLower(config.Username)
 	if config.Token == "" {
 		client, err = mautrix.NewClient(config.Homeserver, "", "")
 		if err != nil {
@@ -19,7 +22,7 @@ func newMatrixClient(config *botConfig) *mautrix.Client {
 		}
 	} else {
 		log.Println("using token login")
-		client, err = mautrix.NewClient(config.Homeserver, id.NewUserID(config.Username, config.Domain), config.Token)
+		client, err = mautrix.NewClient(config.Homeserver, id.NewUserID(uname, config.Domain), config.Token)
 		if err != nil {
 			panic(err)
 		}
@@ -28,7 +31,7 @@ func newMatrixClient(config *botConfig) *mautrix.Client {
 	if config.Token == "" {
 		loginRes, err := client.Login(&mautrix.ReqLogin{
 			Type:             "m.login.password",
-			Identifier:       mautrix.UserIdentifier{Type: mautrix.IdentifierTypeUser, User: config.Username},
+			Identifier:       mautrix.UserIdentifier{Type: mautrix.IdentifierTypeUser, User: uname},
 			Password:         config.Password,
 			StoreCredentials: true,
 		})