diff --git a/gluon.d.ts b/gluon.d.ts
index b8ab282..dedcf93 100644
--- a/gluon.d.ts
+++ b/gluon.d.ts
@@ -116,8 +116,9 @@ type CDPApi = {
     /** Parameters of CDP command. */
     params?: Object,
 
-    /** Send session ID with the command (default true). */
-    useSessionId?: Boolean = true
+    /** Send session ID with the command (default true).
+    @default true */
+    useSessionId?: boolean
   ): Promise<any>
 };
 
@@ -260,4 +261,4 @@ export function open(
 
   /** Additional options for opening. */
   options: OpenOptions
-): Promise<Window>;
\ No newline at end of file
+): Promise<Window>;