diff --git a/BoardConfig.mk b/BoardConfig.mk
index 9cf37a6..8b84623 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -26,6 +26,7 @@ TARGET_POWERHAL_MODE_EXT_LIB := power-ext-oplus
 
 # Properties
 TARGET_ODM_PROP += $(DEVICE_PATH)/odm.prop
+TARGET_SYSTEM_EXT_PROP += $(DEVICE_PATH)/system_ext.prop
 TARGET_VENDOR_PROP += $(DEVICE_PATH)/vendor.prop
 
 # Recovery
diff --git a/system_ext.prop b/system_ext.prop
new file mode 100644
index 0000000..1edbb66
--- /dev/null
+++ b/system_ext.prop
@@ -0,0 +1,2 @@
+# IFAA
+sys.oplus.ifaa.model=ONEPLUS-R23821