diff --git a/Makefile b/Makefile
index 441127b..c5ed615 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 -include config.out
 
 CXX ?= g++
-CXXFLAGS := -g -Wall -pedantic
+CXXFLAGS := -std=c++11 -g -Wall -pedantic
 OBJFLAGS := $(CXXFLAGS) -c
 LDFLAGS := -lreadline