diff --git a/phhgsi_arm_a/BoardConfig.mk b/phhgsi_arm_a/BoardConfig.mk
index 36a8bf4..9d8e5d5 100644
--- a/phhgsi_arm_a/BoardConfig.mk
+++ b/phhgsi_arm_a/BoardConfig.mk
@@ -3,6 +3,8 @@ include device/phh/treble/board-base.mk
 
 ifeq ($(BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE),)
 BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1313583104
+else
+BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE := 8388608
 endif
 
 TARGET_USES_64_BIT_BINDER := false