diff --git a/meta-arm-bsp/recipes-bsp/trusted-firmware-m/trusted-firmware-m-corstone1000.inc b/meta-arm-bsp/recipes-bsp/trusted-firmware-m/trusted-firmware-m-corstone1000.inc
index e0a0745c..a9521fbf 100644
--- a/meta-arm-bsp/recipes-bsp/trusted-firmware-m/trusted-firmware-m-corstone1000.inc
+++ b/meta-arm-bsp/recipes-bsp/trusted-firmware-m/trusted-firmware-m-corstone1000.inc
@@ -16,7 +16,7 @@ EXTRA_OECMAKE += "-DPLATFORM_IS_FVP=${TFM_PLATFORM_IS_FVP}"
 EXTRA_OECMAKE += "-DCC312_LEGACY_DRIVER_API_ENABLED=OFF"
 EXTRA_OECMAKE:append:corstone1000-fvp = " -DENABLE_MULTICORE=${@bb.utils.contains('MACHINE_FEATURES', 'corstone1000_fvp_smp', 'TRUE', 'FALSE', d)}"
 EXTRA_OECMAKE:append:corstone1000-mps3 = " -DPLATFORM_PSA_ADAC_SECURE_DEBUG=${@bb.utils.contains('MACHINE_FEATURES', 'secure-debug', 'ON', 'OFF', d)}"
-EXTRA_OECMAKE:append:corstone1000-mps3 = " -DPLATFORM_PSA_ADAC_SOURCE_PATH=${S}/../tfm-psa-adac -DPLATFORM_PSA_ADAC_BUILD_PATH=${B}/tfm-psa-adac-build"
+EXTRA_OECMAKE:append:corstone1000-mps3 = " -DPLATFORM_PSA_ADAC_SOURCE_PATH=${UNPACKDIR}/tfm-psa-adac -DPLATFORM_PSA_ADAC_BUILD_PATH=${B}/tfm-psa-adac-build"
 
 SRC_URI += " \
             file://0001-arm-trusted-firmware-m-disable-address-warnings-into.patch \