diff --git a/src/unlocker/proxy.cpp b/src/unlocker/proxy.cpp
index 99899e4..c78018e 100644
--- a/src/unlocker/proxy.cpp
+++ b/src/unlocker/proxy.cpp
@@ -526,6 +526,11 @@ void Proxy::handleClient(SOCKET clientSocket)
 
                         OnClientRequest.run(url, fullBody, headers);
 
+                        removeHeader(headers, "Transfer-Encoding");
+                        removeHeader(headers, "Content-Length");
+                        headers.insert(headers.size() - 2,
+                                       "Content-Length: " + std::to_string(fullBody.size()) + "\r\n");
+
                         SSL_write(remoteSSL.get(), headers.data(), (int)headers.size());
                         SSL_write(remoteSSL.get(), fullBody.data(), (int)fullBody.size());
 
diff --git a/src/unlocker/proxy.h b/src/unlocker/proxy.h
index e1846da..a7e92c4 100644
--- a/src/unlocker/proxy.h
+++ b/src/unlocker/proxy.h
@@ -30,7 +30,7 @@ class Proxy
         bool init();
         void shutdown();
 
-        CallbackEvent<std::string&, const std::string&, std::string&> OnClientRequest;
+        CallbackEvent<const std::string&, std::string&, std::string&> OnClientRequest;
         CallbackEvent<const std::string&, std::string&, std::string&> OnServerResponse;
 
         void addWhitelistDomain(const std::string& domain);
diff --git a/src/unlocker/spoofing.cpp b/src/unlocker/spoofing.cpp
index 5c74178..ab417b3 100644
--- a/src/unlocker/spoofing.cpp
+++ b/src/unlocker/spoofing.cpp
@@ -51,7 +51,7 @@ void Spoofer::registerListeners(Proxy* proxy)
         this->serverResponseHandler(url, body, respHeaders);
     });
 
-    proxy->OnClientRequest.addListener([this](std::string& url, const std::string& body, std::string& reqHeaders) {
+    proxy->OnClientRequest.addListener([this](const std::string& url, std::string& body, std::string& reqHeaders) {
         this->clientRequestHandler(url, body, reqHeaders);
     });
 }
diff --git a/src/unlocker/spoofing.h b/src/unlocker/spoofing.h
index 5b62c46..9180eb1 100644
--- a/src/unlocker/spoofing.h
+++ b/src/unlocker/spoofing.h
@@ -43,7 +43,7 @@ class Spoofer
         void onBloodweb(std::string& body, std::string& respHeaders);
 
         void serverResponseHandler(const std::string& url, std::string& body, std::string& respHeaders);
-        void clientRequestHandler(std::string& url, const std::string& body, std::string& reqHeaders);
+        void clientRequestHandler(const std::string& url, std::string& body, std::string& reqHeaders);
 
         SpooferConfig _config;