diff --git a/device.mk b/device.mk
index a168e870..61dc81ae 100644
--- a/device.mk
+++ b/device.mk
@@ -1142,4 +1142,4 @@ PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/android.hardware.device_unique_attestation.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.hardware.device_unique_attestation.xml
 
 # Call deleteAllKeys if vold detects a factory reset
-PRODUCT_VENDOR_PROPERTIES += ro.crypto.metadata_init_delete_all_keys.enabled=true
+PRODUCT_VENDOR_PROPERTIES += ro.crypto.metadata_init_delete_all_keys.enabled?=true