diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index a57ab23..0f01471 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -340,6 +340,7 @@
 CONFIG_EFI_CAPSULE_ON_DISK=y
 CONFIG_EFI_CAPSULE_FIRMWARE_RAW=y
 CONFIG_EFI_CAPSULE_AUTHENTICATE=y
+CONFIG_EFI_CAPSULE_ESL_FILE="board/sandbox/capsule_pub_esl_good.esl"
 CONFIG_EFI_SECURE_BOOT=y
 CONFIG_TEST_FDTDEC=y
 CONFIG_UNIT_TEST=y
diff --git a/configs/sandbox_flattree_defconfig b/configs/sandbox_flattree_defconfig
index c20015d..db916e6 100644
--- a/configs/sandbox_flattree_defconfig
+++ b/configs/sandbox_flattree_defconfig
@@ -226,6 +226,7 @@
 CONFIG_EFI_CAPSULE_ON_DISK=y
 CONFIG_EFI_CAPSULE_FIRMWARE_FIT=y
 CONFIG_EFI_CAPSULE_AUTHENTICATE=y
+CONFIG_EFI_CAPSULE_ESL_FILE="board/sandbox/capsule_pub_esl_good.esl"
 CONFIG_UNIT_TEST=y
 CONFIG_UT_TIME=y
 CONFIG_UT_DM=y