diff --git a/Makefile b/Makefile
index a90aa343..19dec512 100644
--- a/Makefile
+++ b/Makefile
@@ -303,7 +303,7 @@ endif
 
 # C compiler options
 CFLAGS = -G 0 $(TARGET_CFLAGS) $(DEF_INC_CFLAGS)
-CFLAGS += -mno-shared -march=vr4300 -mfix4300 -mabi=32 -mhard-float -mdivide-breaks -fno-stack-protector -fno-common -fno-zero-initialized-in-bss -fno-PIC -mno-abicalls -fno-strict-aliasing -fno-inline-functions -ffreestanding -fwrapv -Wall -Wextra
+CFLAGS += -std=gnu23 -Wno-unused-variable -mno-shared -march=vr4300 -mfix4300 -mabi=32 -mhard-float -mdivide-breaks -fno-stack-protector -fno-common -fno-zero-initialized-in-bss -fno-PIC -mno-abicalls -fno-strict-aliasing -fno-inline-functions -ffreestanding -fwrapv -Wall -Wextra
 CFLAGS += -Wno-missing-braces
 
 ASFLAGS     := -march=vr4300 -mabi=32 $(foreach i,$(INCLUDE_DIRS),-I$(i)) $(foreach d,$(DEFINES),--defsym $(d))