diff --git a/deltachat-jsonrpc/typescript/src/client.ts b/deltachat-jsonrpc/typescript/src/client.ts
index fce45bb19..2ed6435ff 100644
--- a/deltachat-jsonrpc/typescript/src/client.ts
+++ b/deltachat-jsonrpc/typescript/src/client.ts
@@ -120,7 +120,7 @@ export class StdioTransport extends BaseTransport {
     });
   }
 
-  _send(message: RPC.Message): void {
+  _send(message: any): void {
     const serialized = JSON.stringify(message);
     this.input.write(serialized + "\n");
   }