diff --git a/lib/clang/llvm.build.mk b/lib/clang/llvm.build.mk
index 5ccd5c3b5278..17c38b04b3bd 100644
--- a/lib/clang/llvm.build.mk
+++ b/lib/clang/llvm.build.mk
@@ -106,7 +106,7 @@ CFLAGS+=	-ffunction-sections
 CFLAGS+=	-fdata-sections
 LDFLAGS+=	-Wl,--gc-sections
 
-CXXSTD?=	c++11
+CXXSTD?=	c++14
 CXXFLAGS+=	-fno-exceptions
 CXXFLAGS+=	-fno-rtti
 CXXFLAGS.clang+= -stdlib=libc++