diff --git a/modules/openid-federation-client/src/jsMain/kotlin/com/sphereon/oid/fed/client/crypto/Crypto.js.kt b/modules/openid-federation-client/src/jsMain/kotlin/com/sphereon/oid/fed/client/crypto/Crypto.js.kt
index 1f017988..9b42dcd3 100644
--- a/modules/openid-federation-client/src/jsMain/kotlin/com/sphereon/oid/fed/client/crypto/Crypto.js.kt
+++ b/modules/openid-federation-client/src/jsMain/kotlin/com/sphereon/oid/fed/client/crypto/Crypto.js.kt
@@ -30,6 +30,8 @@ external interface ICallbackCryptoServiceJS<PlatformCallbackType> {
     fun register(platformCallback: PlatformCallbackType?): ICallbackCryptoServiceJS<PlatformCallbackType>
 }
 
+@JsExport
+@JsName("ICryptoServiceCallback")
 external interface ICryptoServiceCallbackJS {
     fun verify(
         jwt: String,