diff --git a/practica2.2/replicacion-chat/Makefile b/practica2.2/replicacion-chat/Makefile
index 0e5ba0f..8a13b95 100644
--- a/practica2.2/replicacion-chat/Makefile
+++ b/practica2.2/replicacion-chat/Makefile
@@ -1,5 +1,5 @@
 CC=g++
-CFLAGS=-g -I.
+CFLAGS=-g -I. -std=c++11
 DEPS = Socket.h Chat.h
 OBJ = Socket.o Chat.o
 LIBS=-lpthread