diff --git a/libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/MatrixRoom.kt b/libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/MatrixRoom.kt
index 3ff91996d3..44a611a43e 100644
--- a/libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/MatrixRoom.kt
+++ b/libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/MatrixRoom.kt
@@ -308,8 +308,8 @@ interface MatrixRoom : Closeable {
     suspend fun generateWidgetWebViewUrl(
         widgetSettings: MatrixWidgetSettings,
         clientId: String,
-        languageTag: String? = null,
-        theme: String? = null,
+        languageTag: String?,
+        theme: String?,
     ): Result<String>
 
     /**