diff --git a/engine.mk b/engine.mk
index 66293ea3..cffbcdd2 100644
--- a/engine.mk
+++ b/engine.mk
@@ -56,9 +56,9 @@ GLOBAL_INCLUDES := $(BUILDDIR) $(addsuffix /include,$(LKINC))
 GLOBAL_OPTFLAGS ?= $(ARCH_OPTFLAGS)
 GLOBAL_COMPILEFLAGS := -g -finline -include $(CONFIGHEADER)
 GLOBAL_COMPILEFLAGS += -W -Wall -Wno-multichar -Wno-unused-parameter -Wno-unused-function -Wno-unused-label -Werror=return-type
-GLOBAL_CFLAGS := --std=gnu99 -Werror-implicit-function-declaration -Wstrict-prototypes -Wwrite-strings
+GLOBAL_CFLAGS := --std=gnu11 -Werror-implicit-function-declaration -Wstrict-prototypes -Wwrite-strings
 #GLOBAL_CFLAGS += -Werror
-GLOBAL_CPPFLAGS := -fno-exceptions -fno-rtti -fno-threadsafe-statics
+GLOBAL_CPPFLAGS := --std=c++11 -fno-exceptions -fno-rtti -fno-threadsafe-statics
 #GLOBAL_CPPFLAGS += -Weffc++
 GLOBAL_ASMFLAGS := -DASSEMBLY
 GLOBAL_LDFLAGS :=