diff --git a/target/product/virtual_ab_ota/android_t_baseline.mk b/target/product/virtual_ab_ota/android_t_baseline.mk
index f862485178..af0f7a9371 100644
--- a/target/product/virtual_ab_ota/android_t_baseline.mk
+++ b/target/product/virtual_ab_ota/android_t_baseline.mk
@@ -21,4 +21,4 @@
 # All U+ launching devices should instead use vabc_features.mk.
 $(call inherit-product, $(SRC_TARGET_DIR)/product/virtual_ab_ota/vabc_features.mk)
 
-PRODUCT_VIRTUAL_AB_COW_VERSION := 2
+PRODUCT_VIRTUAL_AB_COW_VERSION ?= 2