diff --git a/Foundation/NSURLSession/NSURLSessionTask.swift b/Foundation/NSURLSession/NSURLSessionTask.swift
index ae14fbf7f9..ced3288d88 100644
--- a/Foundation/NSURLSession/NSURLSessionTask.swift
+++ b/Foundation/NSURLSession/NSURLSessionTask.swift
@@ -568,6 +568,8 @@ fileprivate extension URLSessionTask {
         easyHandle.set(requestMethod: request.httpMethod ?? "GET")
         if request.httpMethod == "HEAD" {
             easyHandle.set(noBody: true)
+        } else if ((request.httpMethod == "POST") && (request.value(forHTTPHeaderField: "Content-Type") == nil)) {
+            easyHandle.set(customHeaders: ["Content-Type:application/x-www-form-urlencoded"])
         }
     }
 }