diff --git a/mirai-core-api/src/commonMain/kotlin/message/data/MessageChainBuilder.kt b/mirai-core-api/src/commonMain/kotlin/message/data/MessageChainBuilder.kt
index e89c31305..e991db43c 100644
--- a/mirai-core-api/src/commonMain/kotlin/message/data/MessageChainBuilder.kt
+++ b/mirai-core-api/src/commonMain/kotlin/message/data/MessageChainBuilder.kt
@@ -204,6 +204,7 @@ public class MessageChainBuilder private constructor(
     }
 
     public override fun clear() {
+        cache.setLength(0)
         return container.clear()
     }