diff --git a/drivers/pps/generators/Makefile b/drivers/pps/generators/Makefile
index 2d56dd0495d5..2589fd0f2481 100644
--- a/drivers/pps/generators/Makefile
+++ b/drivers/pps/generators/Makefile
@@ -5,6 +5,4 @@
 
 obj-$(CONFIG_PPS_GENERATOR_PARPORT) += pps_gen_parport.o
 
-ifeq ($(CONFIG_PPS_DEBUG),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+ccflags-$(CONFIG_PPS_DEBUG) := -DDEBUG