diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index ea2b256..1cd1c2e 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -345,3 +345,4 @@
 CONFIG_UNIT_TEST=y
 CONFIG_UT_TIME=y
 CONFIG_UT_DM=y
+CONFIG_ARM_FFA_TRANSPORT=y