diff --git a/libraries/botbuilder-ai/src/qnamaker-utils/httpRequestUtils.ts b/libraries/botbuilder-ai/src/qnamaker-utils/httpRequestUtils.ts
index 1c9f615bee..8269b5ab47 100644
--- a/libraries/botbuilder-ai/src/qnamaker-utils/httpRequestUtils.ts
+++ b/libraries/botbuilder-ai/src/qnamaker-utils/httpRequestUtils.ts
@@ -67,14 +67,9 @@ export class HttpRequestUtils {
      */
     private getHeaders(endpoint: QnAMakerEndpoint): any {
         const headers: any = {};
-        const isLegacyProtocol: boolean = endpoint.host.endsWith('v2.0') || endpoint.host.endsWith('v3.0');
-
-        if (isLegacyProtocol) {
-            headers['Ocp-Apim-Subscription-Key'] = endpoint.endpointKey;
-        } else {
-            headers.Authorization = `EndpointKey ${ endpoint.endpointKey }`;
-        }
 
+        headers['Ocp-Apim-Subscription-Key'] = endpoint.endpointKey;
+        headers.Authorization = `EndpointKey ${ endpoint.endpointKey }`;
         headers['User-Agent'] = this.getUserAgent();
         headers['Content-Type'] = 'application/json';