diff --git a/client_http.hpp b/client_http.hpp
index 6c7e269..32c5d14 100644
--- a/client_http.hpp
+++ b/client_http.hpp
@@ -33,7 +33,7 @@ namespace SimpleWeb {
             return request(request_type, path, empty_ss, header);
         }
         
-        std::shared_ptr<Response> request(const std::string& request_type, const std::string& path, std::ostream& content, 
+        std::shared_ptr<Response> request(const std::string& request_type, const std::string& path, std::iostream& content,
                 const std::map<std::string, std::string>& header=std::map<std::string, std::string>()) {
             std::string corrected_path=path;
             if(corrected_path=="")