diff --git a/proto/Makefile b/proto/Makefile
index 6613d91e2060a8e87139e3e49a9a3bc92f5c679b..ed1540df28a45cb80bc797db6ec36f7b1cff32f4 100644
--- a/proto/Makefile
+++ b/proto/Makefile
@@ -3,6 +3,10 @@ obj-m += hypervisor.o
 
 PWD := $(CURDIR) 
 
+ifeq ($(DEBUG), 1)
+	EXTRA_CFLAGS += -DDEBUG
+endif
+
 all:
 	$(MAKE) -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules