diff --git a/src/main/java/com/seconectai/condocontab/integracao/EvolutionApiClient.java b/src/main/java/com/seconectai/condocontab/integracao/EvolutionApiClient.java
index c73f1b7..696860c 100644
--- a/src/main/java/com/seconectai/condocontab/integracao/EvolutionApiClient.java
+++ b/src/main/java/com/seconectai/condocontab/integracao/EvolutionApiClient.java
@@ -142,17 +142,15 @@ public final class EvolutionApiClient {
         if (mockMode(baseUrl) || webhookUrl == null || webhookUrl.isBlank()) return;
         Map<String, Object> headers = new LinkedHashMap<>();
         if (webhookSecret != null && !webhookSecret.isBlank()) headers.put("X-Webhook-Secret", webhookSecret);
-        Map<String, Object> webhook = new LinkedHashMap<>();
-        webhook.put("enabled", true);
-        webhook.put("url", webhookUrl);
-        webhook.put("webhook_by_events", false);
-        webhook.put("webhook_base64", false);
-        webhook.put("byEvents", false);
-        webhook.put("base64", false);
-        webhook.put("events", java.util.List.of("MESSAGES_UPSERT"));
-        if (!headers.isEmpty()) webhook.put("headers", headers);
         Map<String, Object> payload = new LinkedHashMap<>();
-        payload.put("webhook", webhook);
+        payload.put("enabled", true);
+        payload.put("url", webhookUrl);
+        payload.put("webhook_by_events", false);
+        payload.put("webhook_base64", false);
+        payload.put("byEvents", false);
+        payload.put("base64", false);
+        payload.put("events", java.util.List.of("MESSAGES_UPSERT"));
+        if (!headers.isEmpty()) payload.put("headers", headers);
         HttpRequest req = HttpRequest.newBuilder(URI.create(clean(baseUrl) + "/webhook/set/" + instanceName))
                 .timeout(Duration.ofSeconds(20))
                 .header("Content-Type", "application/json")