diff --git a/src/alice.ts b/src/alice.ts
index 6509fba..f31cf5a 100644
--- a/src/alice.ts
+++ b/src/alice.ts
@@ -79,10 +79,9 @@ export class Alice implements IAlice {
     if (data.version !== ALICE_PROTOCOL_VERSION) {
       throw new Error('Unknown protocol version');
     }
-    debug('>> ', data.request.command);
+    debug(`incoming request: ${data.request.command}`);
     const context = this._buildContext(data);
     const result = await this._runMiddlewares(context);
-    debug('result', result);
     if (!result) {
       throw new Error(
         'No response for request ' +
@@ -91,6 +90,7 @@ export class Alice implements IAlice {
       );
     }
 
+    debug(`outcoming result: ${result.responseBody.text}`);
     return {
       response: result.responseBody,
       session: {
diff --git a/src/server/webhookServer.ts b/src/server/webhookServer.ts
index 634e941..dc7ccef 100644
--- a/src/server/webhookServer.ts
+++ b/src/server/webhookServer.ts
@@ -53,12 +53,10 @@ export class WebhookServer {
     request: http.IncomingMessage,
     response: http.ServerResponse,
   ): Promise<void> {
-    debug('incoming request');
     if (!isAvailableMethod(request.method) || request.url !== this.webhookUrl) {
       response.statusCode = 400;
       return response.end();
     }
-    debug('good request');
 
     const requestBody = await WebhookServer._readRequest(request);
     const responseBody = await this._handleAliceRequest(requestBody);