diff --git a/source/Makefile.mk b/source/Makefile.mk
index 7f13a3186..c422ee979 100644
--- a/source/Makefile.mk
+++ b/source/Makefile.mk
@@ -117,7 +117,7 @@ endif
 64BIT_FLAGS = -m64
 
 BUILD_C_FLAGS   = $(BASE_FLAGS) -std=gnu99 $(CFLAGS)
-BUILD_CXX_FLAGS = $(BASE_FLAGS) -std=gnu11 $(CXXFLAGS)
+BUILD_CXX_FLAGS = $(BASE_FLAGS) -std=gnu0x $(CXXFLAGS)
 LINK_FLAGS      = $(LINK_OPTS) $(LDFLAGS)
 
 ifneq ($(MACOS),true)