diff --git a/server/server.go b/server/server.go
index 17ee3ea..dbf7efc 100644
--- a/server/server.go
+++ b/server/server.go
@@ -210,7 +210,7 @@ func apiRoutes() *mux.Router {
 func basicAuthResponse(w http.ResponseWriter) {
 	w.Header().Set("WWW-Authenticate", `Basic realm="Login"`)
 	w.WriteHeader(http.StatusUnauthorized)
-	_, _ = w.Write([]byte("Unauthorised.\n"))
+	_, _ = w.Write([]byte("Unauthorized.\n"))
 }
 
 // sendAPIAuthMiddleware handles authentication specifically for the send API endpoint
diff --git a/server/websockets/client.go b/server/websockets/client.go
index 4d44110..c56ecd1 100644
--- a/server/websockets/client.go
+++ b/server/websockets/client.go
@@ -147,5 +147,5 @@ func ServeWs(hub *Hub, w http.ResponseWriter, r *http.Request) {
 func basicAuthResponse(w http.ResponseWriter) {
 	w.Header().Set("WWW-Authenticate", `Basic realm="Login"`)
 	w.WriteHeader(http.StatusUnauthorized)
-	_, _ = w.Write([]byte("Unauthorised.\n"))
+	_, _ = w.Write([]byte("Unauthorized.\n"))
 }