diff --git a/Makefile b/Makefile
index d35c95b..3d47b38 100644
--- a/Makefile
+++ b/Makefile
@@ -170,7 +170,7 @@ else
 endif
 
 CFLAGS   += $(DEF_FLAGS) 
-CXXFLAGS += $(DEF_FLAGS)
+CXXFLAGS += $(DEF_FLAGS) -std=c++11
 
 .PHONY: all install clean