diff --git a/src/interface/exchange.ts b/src/interface/exchange.ts
index aba273c..18f2a40 100644
--- a/src/interface/exchange.ts
+++ b/src/interface/exchange.ts
@@ -1,9 +1,7 @@
 import { PortfolioProvider } from "./portfolio";
 import { QuoteProvider } from "./quote";
 
-export interface Exchange<Credentials> {
-    readonly credentials: Credentials;
-
+export interface Exchange {
     readonly portfolioProvider: PortfolioProvider;
     readonly quoteProvider: QuoteProvider;