diff --git a/core/config.mk b/core/config.mk
index f8a9879..7d4301e 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -110,6 +110,7 @@
 $(KATI_obsolete_var BUILD_BROKEN_ENG_DEBUG_TAGS)
 $(KATI_obsolete_export It is a global setting. See $(CHANGES_URL)#export_keyword)
 $(KATI_obsolete_var BUILD_BROKEN_ANDROIDMK_EXPORTS)
+$(KATI_obsolete_var PRODUCT_NOTICE_SPLIT_OVERRIDE,Stop using this, keep calm, and carry on.)
 $(KATI_obsolete_var PRODUCT_STATIC_BOOT_CONTROL_HAL,Use shared library module instead. See $(CHANGES_URL)#PRODUCT_STATIC_BOOT_CONTROL_HAL)
 $(KATI_obsolete_var \
   ARCH_ARM_HAVE_ARMV7A \
@@ -777,16 +778,9 @@
   PRODUCT_FULL_TREBLE := true
 endif
 
-# TODO(b/69865032): Make PRODUCT_NOTICE_SPLIT the default behavior and remove
-#    references to it here and below.
-ifdef PRODUCT_NOTICE_SPLIT_OVERRIDE
-   $(error PRODUCT_NOTICE_SPLIT_OVERRIDE cannot be set.)
-endif
-
 requirements := \
     PRODUCT_TREBLE_LINKER_NAMESPACES \
-    PRODUCT_ENFORCE_VINTF_MANIFEST \
-    PRODUCT_NOTICE_SPLIT
+    PRODUCT_ENFORCE_VINTF_MANIFEST
 
 # If it is overriden, then the requirement override is taken, otherwise it's
 # PRODUCT_FULL_TREBLE
@@ -799,12 +793,16 @@
 PRODUCT_FULL_TREBLE_OVERRIDE ?=
 $(foreach req,$(requirements),$(eval $(req)_OVERRIDE ?=))
 
+# used to be a part of PRODUCT_FULL_TREBLE, but now always set it
+PRODUCT_NOTICE_SPLIT := true
+
 # TODO(b/114488870): disallow PRODUCT_FULL_TREBLE_OVERRIDE from being used.
 .KATI_READONLY := \
     PRODUCT_FULL_TREBLE_OVERRIDE \
     $(foreach req,$(requirements),$(req)_OVERRIDE) \
     $(requirements) \
     PRODUCT_FULL_TREBLE \
+    PRODUCT_NOTICE_SPLIT \
 
 $(KATI_obsolete_var $(foreach req,$(requirements),$(req)_OVERRIDE) \
     ,This should be referenced without the _OVERRIDE suffix.)