diff --git a/src/index.ts b/src/index.ts
index 946483f..cef9eb5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -108,6 +108,6 @@ export interface IndependentFileSmall {
 }
 
 export interface SslData {
-  cert?: IndependentFileSmall | Uint8Array;
-  key?: IndependentFileSmall | Uint8Array;
+  cert?: Uint8Array;
+  key?: Uint8Array;
 }