diff --git a/script/tf-coverity/coverity_tf_conf.py b/script/tf-coverity/coverity_tf_conf.py
index 55f1d2e..22107d7 100644
--- a/script/tf-coverity/coverity_tf_conf.py
+++ b/script/tf-coverity/coverity_tf_conf.py
@@ -30,6 +30,7 @@
     ("plat/arm/common/arm_tzc_dmc500.c", "Only used by deprecated SGM platforms"),
     ("plat/marvell/armada/a8k/common/plat_bl1_setup.c", "Not used by any upstream marvell platform"),
     ("plat/mediatek/mt8173/plat_mt_gic.c", "Deprecated code"),
+    ("plat/mediatek/common/custom/oem_svc.c", "Not used by any upstream mediatek platform"),
     ("plat/nvidia/tegra/common/tegra_gicv3.c", "Not used by any upstream nvidia platform"),
     ("plat/qemu/common/sp_min/sp_min_setup.c", "Not used in any upstream platform - see GENFW-2164"),
     ("plat/rockchip/rk3399/drivers/m0/.*", "Work around the lack of support for the M0 compiler in the scripts"),
diff --git a/script/tf-coverity/tf-cov-make b/script/tf-coverity/tf-cov-make
index f55411e..cd4b89e 100755
--- a/script/tf-coverity/tf-cov-make
+++ b/script/tf-coverity/tf-cov-make
@@ -373,7 +373,7 @@
     $(common_flags) all
 make PLAT=imx8mm $(common_flags) NEED_BL2=yes MEASURED_BOOT=1 \
     TPM_HASH_ALG=sha256 ${TBB_OPTIONS} all
-make PLAT=imx8mn $(common_flags) all
+make PLAT=imx8mn $(common_flags) SDEI_SUPPORT=1 all
 make PLAT=imx8mp $(common_flags) NEED_BL2=yes ${TBB_OPTIONS} all
 
 # Due to the limited OCRAM space that can be used for TF-A, build test