diff --git a/arch/m68k/cpu/mcf532x/Makefile b/arch/m68k/cpu/mcf532x/Makefile
index 97aa3f1..9c53c50 100644
--- a/arch/m68k/cpu/mcf532x/Makefile
+++ b/arch/m68k/cpu/mcf532x/Makefile
@@ -5,7 +5,7 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-# CFLAGS += -DET_DEBUG
+# ccflags-y += -DET_DEBUG
 
 extra-y := start.o
 obj-y	= cpu.o speed.o cpu_init.o interrupts.o