diff --git a/code/ui/blocks/src/components/ArgsTable/types.ts b/code/ui/blocks/src/components/ArgsTable/types.ts
index 7efb484fe6a9..febd64434fff 100644
--- a/code/ui/blocks/src/components/ArgsTable/types.ts
+++ b/code/ui/blocks/src/components/ArgsTable/types.ts
@@ -50,7 +50,7 @@ export interface ArgType {
       detail?: string;
     };
     type?: {
-      summary?: string;
+      summary?: string | undefined;
       detail?: string;
     };
     readonly?: boolean;