diff --git a/BoardConfigCommon.mk b/BoardConfigCommon.mk
index 9f5a3f4..2de167a 100644
--- a/BoardConfigCommon.mk
+++ b/BoardConfigCommon.mk
@@ -138,6 +138,7 @@ BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4
 BOARD_PRODUCTIMAGE_EXTFS_INODE_COUNT := -1
 BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE := 1887436800
 BOARD_SYSTEMIMAGE_EXTFS_INODE_COUNT := -1
+BOARD_SYSTEM_EXTIMAGE_PARTITION_RESERVED_SIZE := 104857600
 BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE := 1887436800
 BOARD_VENDORIMAGE_PARTITION_RESERVED_SIZE := 104857600