diff --git a/I2PControl.cpp b/I2PControl.cpp
index 6529c0e1..18fe469b 100644
--- a/I2PControl.cpp
+++ b/I2PControl.cpp
@@ -171,7 +171,7 @@ namespace client
 
 // handlers
 
-	void I2PControlService::AuthenticateHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string> results)
+	void I2PControlService::AuthenticateHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
 	{
 		const std::string& api = params.at (I2P_CONTROL_PARAM_API);
 		const std::string& password = params.at (I2P_CONTROL_PARAM_PASSWORD);
@@ -180,14 +180,14 @@ namespace client
 		results[I2P_CONTROL_PARAM_TOKEN] = boost::lexical_cast<std::string>(i2p::util::GetSecondsSinceEpoch ());
 	}	
 
-	void I2PControlService::EchoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string> results)
+	void I2PControlService::EchoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
 	{
 		const std::string& echo = params.at (I2P_CONTROL_PARAM_ECHO);
 		LogPrint (eLogDebug, "I2PControl Echo Echo=", echo);
 		results[I2P_CONTROL_PARAM_RESULT] = echo;	
 	}
 
-	void I2PControlService::RouterInfoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string> results)
+	void I2PControlService::RouterInfoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results)
 	{
 	}
 }
diff --git a/I2PControl.h b/I2PControl.h
index 59174f29..f203466d 100644
--- a/I2PControl.h
+++ b/I2PControl.h
@@ -59,9 +59,9 @@ namespace client
 
 		private:
 
-			void AuthenticateHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string> results);
-			void EchoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string> results);
-			void RouterInfoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string> results);
+			void AuthenticateHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results);
+			void EchoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results);
+			void RouterInfoHandler (const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results);
 
 		private:
 
@@ -71,7 +71,7 @@ namespace client
 			boost::asio::io_service m_Service;
 			boost::asio::ip::tcp::acceptor m_Acceptor;	
 
-			typedef void (I2PControlService::*MethodHandler)(const std::map<std::string, std::string>& params, std::map<std::string, std::string> results);
+			typedef void (I2PControlService::*MethodHandler)(const std::map<std::string, std::string>& params, std::map<std::string, std::string>& results);
 			std::map<std::string, MethodHandler> m_MethodHanders;		
 	};
 }