diff --git a/src/components/CommandRunResult.vue b/src/components/CommandRunResult.vue
index 09654d8..6e354bb 100644
--- a/src/components/CommandRunResult.vue
+++ b/src/components/CommandRunResult.vue
@@ -206,7 +206,7 @@ export default {
     setSubInput(currentCommand) {
       this.fromUtools && utools.setExpendHeight(0);
       let matched = specialVars.subinput.match.exec(currentCommand.cmd);
-      let placeholder = matched[1]?.slice(1) || "↩ 执行命令，↑↓ 切换历史";
+      let placeholder = matched?.[1]?.slice(1) || "↩ 执行命令，↑↓ 切换历史";
       utools.setSubInput(({ text }) => {
         this.subInputValue = text;
       }, placeholder);