diff --git a/board-base.mk b/board-base.mk
index 1ddacaf..e363dd5 100644
--- a/board-base.mk
+++ b/board-base.mk
@@ -7,3 +7,5 @@ BOARD_ROOT_EXTRA_FOLDERS += bt_firmware sec_storage efs persist
 BUILD_BROKEN_ELF_PREBUILT_PRODUCT_COPY_FILES := true
 
 BOARD_ROOT_EXTRA_SYMLINKS := $(filter-out $(BOARD_ROOT_EXTRA_SYMLINKS),/mnt/vendor/persist:/persist)
+
+BOARD_EXT4_SHARE_DUP_BLOCKS := true