diff --git a/rpi3.mk b/rpi3.mk
index 70b14df..c333393 100644
--- a/rpi3.mk
+++ b/rpi3.mk
@@ -9,7 +9,7 @@
 override COMPILE_S_KERNEL  := 64
 
 # Need to set this before including common.mk
-BUILDROOT_GETTY_PORT ?= ttyS0
+BR2_TARGET_GENERIC_GETTY_PORT ?= ttyS0
 BR2_ROOTFS_POST_BUILD_SCRIPT ?= "board/raspberrypi3-64/post-build.sh"
 
 include common.mk