diff --git a/src/requester.cpp b/src/requester.cpp
index 7ae84ff..304af8d 100644
--- a/src/requester.cpp
+++ b/src/requester.cpp
@@ -4,6 +4,8 @@
 #include <cstring>
 #include <stdexcept>
 
+using namespace sc;
+
 size_t requester::write_data(char *buf, size_t sz, size_t nmemb, void *user_data) {
     size_t realsize = sz * nmemb;
     requester* req {reinterpret_cast<requester*>(user_data)};
diff --git a/src/requester.hpp b/src/requester.hpp
index 174c3df..c64e6b8 100644
--- a/src/requester.hpp
+++ b/src/requester.hpp
@@ -6,34 +6,37 @@
 #include <curl/curl.h>
 #include <libsclogging.hpp>
 
-class requester {
-    public:
-        // callback for data receiving
-        static size_t write_data(char* buf, size_t sz, size_t nmemb, void* user_data);
+namespace sc {
 
-        // this class is a RAII class for a curl handle
-        requester();
-        ~requester();
+    class requester {
+        public:
+            // callback for data receiving
+            static size_t write_data(char* buf, size_t sz, size_t nmemb, void* user_data);
 
-        // forbid copying and moving
-        requester(const requester&) = delete;
-        requester& operator=(const requester&) = delete;
-        requester(requester&&) = delete;
-        requester& operator=(requester&&) = delete;
+            // this class is a RAII class for a curl handle
+            requester();
+            ~requester();
 
-        // optional logger
-        void logger(sc::logger* logger) { _logger = logger; }
+            // forbid copying and moving
+            requester(const requester&) = delete;
+            requester& operator=(const requester&) = delete;
+            requester(requester&&) = delete;
+            requester& operator=(requester&&) = delete;
 
-        // perform a http get request
-        std::string get(const std::string& url);
+            // optional logger
+            void logger(sc::logger* logger) { _logger = logger; }
 
-        // perform a http post request
-        std::string post(const std::string& url, const std::string& json);
+            // perform a http get request
+            std::string get(const std::string& url);
 
-    private:
-        std::unique_ptr<CURL, void(*)(CURL*)> _h {nullptr, curl_easy_cleanup};
-        sc::logger* _logger {nullptr};
-        std::string _text;
-};
+            // perform a http post request
+            std::string post(const std::string& url, const std::string& json);
 
+        private:
+            std::unique_ptr<CURL, void(*)(CURL*)> _h {nullptr, curl_easy_cleanup};
+            sc::logger* _logger {nullptr};
+            std::string _text;
+    };
+
+}
 #endif // _requester_H_