diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index c00fd66..23ac61e 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -9,6 +9,4 @@
 obj-$(CONFIG_I2C_MUX)		+= i2c-mux.o
 obj-y				+= algos/ busses/ muxes/
 
-ifeq ($(CONFIG_I2C_DEBUG_CORE),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+ccflags-$(CONFIG_I2C_DEBUG_CORE) := -DDEBUG