diff --git a/tgbotapi.behaviour_builder/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/behaviour_builder/expectations/WaitCommandsMessages.kt b/tgbotapi.behaviour_builder/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/behaviour_builder/expectations/WaitCommandsMessages.kt
index 92efba6529..df34cfab1f 100644
--- a/tgbotapi.behaviour_builder/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/behaviour_builder/expectations/WaitCommandsMessages.kt
+++ b/tgbotapi.behaviour_builder/src/commonMain/kotlin/dev/inmo/tgbotapi/extensions/behaviour_builder/expectations/WaitCommandsMessages.kt
@@ -40,7 +40,7 @@ suspend fun BehaviourContext.waitCommandMessage(
 ) = waitCommandMessage(Regex(command), initRequest, errorFactory)
 
 fun Flow<CommonMessage<TextContent>>.requireCommandAtStart() = filter {
-    (it.content.textSources.firstOrNull() as? BotCommandTextSource) != null
+    it.content.textSources.firstOrNull() is BotCommandTextSource
 }
 
 /**