diff --git a/HttpServer/Client/ClientAbstracts.php b/HttpServer/Client/ClientAbstracts.php
index ecf97e80..ae9c39eb 100644
--- a/HttpServer/Client/ClientAbstracts.php
+++ b/HttpServer/Client/ClientAbstracts.php
@@ -530,9 +530,9 @@ abstract class ClientAbstracts extends Component implements IClient
 
 	/**
 	 * @param $newData
-	 * @return mixed
+	 * @return string
 	 */
-	protected function mergeParams($newData): mixed
+	protected function mergeParams($newData): string
 	{
 		if (empty($this->getData())) {
 			return $this->toRequest($newData);
diff --git a/HttpServer/Client/Curl.php b/HttpServer/Client/Curl.php
index c4bdd5a1..c47d1f0c 100644
--- a/HttpServer/Client/Curl.php
+++ b/HttpServer/Client/Curl.php
@@ -54,12 +54,11 @@ class Curl extends ClientAbstracts
 			return $resource;
 		}
 
-		if ($method === self::GET && !empty($this->getData())) {
+		if (!empty($this->getData())) {
 			curl_setopt($resource, CURLOPT_POSTFIELDS, $this->getData());
 		} else if ($method === self::POST) {
 			curl_setopt($resource, CURLOPT_POSTFIELDS, $this->mergeParams($params));
-		}
-		if ($method === self::UPLOAD) {
+		} else if ($method === self::UPLOAD) {
 			curl_setopt($resource, CURLOPT_POSTFIELDS, $params);
 		}
 		return $resource;