diff --git a/src/command/commands/block.js b/src/command/commands/block.js
index 12d6111d73..6d76f5f25b 100644
--- a/src/command/commands/block.js
+++ b/src/command/commands/block.js
@@ -920,7 +920,7 @@ import isFunction from 'lodash/isFunction';
             block = this.editor.board.findBlock(block);
             block.doDestroyBelow(true);
             if (block.isParamBlockType()) {
-                block.thread.updateValueBlock();
+                block.thread?.updateValueBlock?.();
             }
         },
         state(block) {