diff --git a/kernel/power/Makefile b/kernel/power/Makefile
index f9063c6b185d..b75597235d85 100644
--- a/kernel/power/Makefile
+++ b/kernel/power/Makefile
@@ -1,7 +1,4 @@
-
-ifeq ($(CONFIG_PM_DEBUG),y)
-EXTRA_CFLAGS	+=	-DDEBUG
-endif
+ccflags-$(CONFIG_PM_DEBUG)	:=	-DDEBUG
 
 obj-$(CONFIG_PM)		+= main.o
 obj-$(CONFIG_PM_SLEEP)		+= console.o