diff --git a/include/object_pool.h b/include/object_pool.h
index 655f765928ed635ea3a67288237fd48abe3fce82..f7622ba624a3ace9d6a27c29bcb7418112918d3a 100644
--- a/include/object_pool.h
+++ b/include/object_pool.h
@@ -156,7 +156,7 @@ protected:
 		if (old_object_ptr && !init_object_id(object_ptr, id))
 		{
 			boost::lock_guard<boost::mutex> lock(invalid_object_can_mutex);
-			invalid_object_can.push_back(old_object_ptr);
+			invalid_object_can.emplace_back(old_object_ptr);
 			old_object_ptr.reset();
 		}
 
diff --git a/include/service_pump.h b/include/service_pump.h
index 466ce143b4eedba6a450e8030f758ea0080837a4..59b0ddf4b5c37e15406333bb1db6b470431a3e2a 100644
--- a/include/service_pump.h
+++ b/include/service_pump.h
@@ -144,7 +144,7 @@ public:
 		{
 			boost::lock_guard<boost::mutex> lock(context_can_mutex);
 			for (BOOST_AUTO(iter, context_can.begin()); iter != context_can.end(); ++iter)
-				refs.push_back(iter->refs);
+				refs.emplace_back(iter->refs);
 		}
 	}
 
diff --git a/include/tcp/server.h b/include/tcp/server.h
index 6c53ed5724307e3f56658978647ee5b991843ecd..141d288a48ba37a485befdf32f621640e9b0bd31 100644
--- a/include/tcp/server.h
+++ b/include/tcp/server.h
@@ -106,7 +106,7 @@ public:
 			if (!socket_ptr)
 				break;
 
-			sockets.push_back(socket_ptr);
+			sockets.emplace_back(socket_ptr);
 		}
 		if (num >= 0)
 			unified_out::info_out("finished pre-creating server sockets, but failed %d time(s).", num + 1);