diff --git a/cntk/cntk.patch b/cntk/cntk.patch
index d7dfedde04..8f7468e581 100644
--- a/cntk/cntk.patch
+++ b/cntk/cntk.patch
@@ -9,7 +9,7 @@ Index: Makefile
 +COMMON_FLAGS:= -std=c++14
  CPPFLAGS:= 
 -CXXFLAGS:= -msse3 -std=c++0x -fopenmp -fpermissive -fPIC -Werror -fcheck-new
-+CXXFLAGS:= -std=c++14 -fopenmp -fpermissive -fPIC -fcheck-new
++CXXFLAGS:= -msse3 -std=c++14 -fopenmp -fpermissive -fPIC -Werror -fcheck-new
  LIBPATH:=
  LIBS:=
  LDFLAGS:=