diff --git a/packages/builtin-tools/src/tools/PowerShellTool/PowerShellTool.tsx b/packages/builtin-tools/src/tools/PowerShellTool/PowerShellTool.tsx
index 2b5d7f7fb..afa469c46 100644
--- a/packages/builtin-tools/src/tools/PowerShellTool/PowerShellTool.tsx
+++ b/packages/builtin-tools/src/tools/PowerShellTool/PowerShellTool.tsx
@@ -421,7 +421,7 @@ export const PowerShellTool = buildTool({
     isSearch: boolean
     isRead: boolean
   } {
-    if (!input.command) {
+    if (!input?.command) {
       return { isSearch: false, isRead: false }
     }
     return isSearchOrReadPowerShellCommand(input.command)