diff --git a/js/pro/exmo.js b/js/pro/exmo.js
index e2e2d3da3479..4daa1b3a8256 100644
--- a/js/pro/exmo.js
+++ b/js/pro/exmo.js
@@ -649,14 +649,14 @@ module.exports = class exmo extends exmoRest {
     }
 
     async authenticate (params = {}) {
+        const messageHash = 'authenticated';
         const [ type, query ] = this.handleMarketTypeAndParams ('authenticate', undefined, params);
         const url = this.urls['api']['ws'][type];
         const client = this.client (url);
-        const time = this.milliseconds ();
-        const messageHash = 'authenticated';
         const future = client.future ('authenticated');
         const authenticated = this.safeValue (client.subscriptions, messageHash);
         if (authenticated === undefined) {
+            const time = this.milliseconds ();
             this.checkRequiredCredentials ();
             const requestId = this.requestId ();
             const signData = this.apiKey + time.toString ();
diff --git a/php/pro/Client.php b/php/pro/Client.php
index 7af211f45c06..fb9b9552c4b0 100644
--- a/php/pro/Client.php
+++ b/php/pro/Client.php
@@ -69,7 +69,7 @@ public function future($message_hash) {
             $future->reject($this->rejections[$message_hash]);
             unset($this->rejections[$message_hash]);
         }
-        return $future;
+        return $future->promise();
     }
 
     public function resolve($result, $message_hash) {
diff --git a/php/pro/ClientTrait.php b/php/pro/ClientTrait.php
index 9290d16db813..b7e126827be8 100644
--- a/php/pro/ClientTrait.php
+++ b/php/pro/ClientTrait.php
@@ -103,7 +103,7 @@ function($result) use ($client, $message_hash, $message, $subscribe_hash, $subsc
                 }
             }
         );
-        return $future->promise();
+        return $future;
     }
 
     public function on_connected($client, $message = null) {