diff --git a/payloads/coreinfo/Makefile b/payloads/coreinfo/Makefile
index 50659d3c0b..a98342fc2e 100644
--- a/payloads/coreinfo/Makefile
+++ b/payloads/coreinfo/Makefile
@@ -83,7 +83,7 @@ OBJCOPY := $(OBJCOPY_$(ARCH-y))
 LPCC := CC="$(CC)" $(LIBPAYLOAD_OBJ)/bin/lpgcc
 LPAS := AS="$(AS)" $(LIBPAYLOAD_OBJ)/bin/lpas
 
-CFLAGS += -Wall -Werror -Os -fno-builtin $(CFLAGS_$(ARCH-y)) $(INCLUDES)
+CFLAGS += -Wall -Wextra -Werror -Os -fno-builtin $(CFLAGS_$(ARCH-y)) $(INCLUDES)
 
 ifneq ($(strip $(HAVE_DOTCONFIG)),)
 include $(src)/.config