diff --git a/meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a-sgi575.inc b/meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a-sgi575.inc
index 5020dea3..e63be960 100644
--- a/meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a-sgi575.inc
+++ b/meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a-sgi575.inc
@@ -12,5 +12,5 @@ TFA_UBOOT          = "0"
 DEPENDS += "virtual/uefi-firmware"
 
 EXTRA_OEMAKE += "BL33=${RECIPE_SYSROOT}/firmware/uefi.bin"
-EXTRA_OEMAKE += "MBEDTLS_DIR=mbedtls TRUSTED_BOARD_BOOT=1 GENERATE_COT=1 ARM_ROTPK_LOCATION=devel_rsa \
+EXTRA_OEMAKE += "TRUSTED_BOARD_BOOT=1 GENERATE_COT=1 ARM_ROTPK_LOCATION=devel_rsa \
                      ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem"
diff --git a/meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a-tc0.inc b/meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a-tc0.inc
index 6049947b..e2f41f13 100644
--- a/meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a-tc0.inc
+++ b/meta-arm-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a-tc0.inc
@@ -15,5 +15,5 @@ TFA_MBEDTLS = "1"
 TFA_DEBUG = "1"
 
 EXTRA_OEMAKE += "SCP_BL2=${RECIPE_SYSROOT}/firmware/scp_ramfw.bin"
-EXTRA_OEMAKE += "MBEDTLS_DIR=mbedtls TRUSTED_BOARD_BOOT=1 GENERATE_COT=1 ARM_ROTPK_LOCATION=devel_rsa \
+EXTRA_OEMAKE += "TRUSTED_BOARD_BOOT=1 GENERATE_COT=1 ARM_ROTPK_LOCATION=devel_rsa \
                      ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem"