diff --git a/src/config/authorization.ts b/src/config/authorization.ts
index eed92f99..b637d058 100644
--- a/src/config/authorization.ts
+++ b/src/config/authorization.ts
@@ -78,7 +78,7 @@ export interface SCAuthorizationProviderEndpoints {
   authorization: string;
 
   /**
-   * An authorization provider endpoints configuration
+   * URL to end current session
    */
   endSession?: string;
 
diff --git a/src/config/file.ts b/src/config/file.ts
index 42ae86f8..4281c770 100644
--- a/src/config/file.ts
+++ b/src/config/file.ts
@@ -31,7 +31,7 @@ export interface SCConfigFile {
   /**
    * Configuration for the supported authorization providers
    */
-  auth: { [key in SCAuthorizationProviderType]: SCAuthorizationProvider; };
+  auth: { [key in SCAuthorizationProviderType]?: SCAuthorizationProvider; };
 
   /**
    * Configuration for the backend that is visible to clients