diff --git a/examples/openthread/ot_br/sdkconfig.defaults b/examples/openthread/ot_br/sdkconfig.defaults
index 7fe886d91f3..496016ae21d 100644
--- a/examples/openthread/ot_br/sdkconfig.defaults
+++ b/examples/openthread/ot_br/sdkconfig.defaults
@@ -11,7 +11,6 @@ CONFIG_PARTITION_TABLE_MD5=y
 #
 # mbedTLS
 #
-CONFIG_MBEDTLS_CMAC_C=y
 CONFIG_MBEDTLS_SSL_PROTO_DTLS=y
 CONFIG_MBEDTLS_KEY_EXCHANGE_ECJPAKE=y
 # end of TLS Key Exchange Methods
diff --git a/examples/openthread/ot_cli/sdkconfig.defaults b/examples/openthread/ot_cli/sdkconfig.defaults
index f8fd9ed374c..eabd3d39628 100644
--- a/examples/openthread/ot_cli/sdkconfig.defaults
+++ b/examples/openthread/ot_cli/sdkconfig.defaults
@@ -11,7 +11,6 @@ CONFIG_PARTITION_TABLE_MD5=y
 #
 # mbedTLS
 #
-CONFIG_MBEDTLS_CMAC_C=y
 CONFIG_MBEDTLS_SSL_PROTO_DTLS=y
 CONFIG_MBEDTLS_KEY_EXCHANGE_ECJPAKE=y
 CONFIG_MBEDTLS_ECJPAKE_C=y
diff --git a/examples/openthread/ot_sleepy_device/deep_sleep/sdkconfig.defaults b/examples/openthread/ot_sleepy_device/deep_sleep/sdkconfig.defaults
index 6c17f055c7d..416e9349fb2 100644
--- a/examples/openthread/ot_sleepy_device/deep_sleep/sdkconfig.defaults
+++ b/examples/openthread/ot_sleepy_device/deep_sleep/sdkconfig.defaults
@@ -9,7 +9,6 @@ CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
 #
 # mbedTLS
 #
-CONFIG_MBEDTLS_CMAC_C=y
 CONFIG_MBEDTLS_SSL_PROTO_DTLS=y
 CONFIG_MBEDTLS_KEY_EXCHANGE_ECJPAKE=y
 CONFIG_MBEDTLS_ECJPAKE_C=y
diff --git a/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.defaults b/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.defaults
index efacbd4513a..03acbcb41c0 100644
--- a/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.defaults
+++ b/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.defaults
@@ -9,7 +9,6 @@ CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
 #
 # mbedTLS
 #
-CONFIG_MBEDTLS_CMAC_C=y
 CONFIG_MBEDTLS_SSL_PROTO_DTLS=y
 CONFIG_MBEDTLS_KEY_EXCHANGE_ECJPAKE=y
 CONFIG_MBEDTLS_ECJPAKE_C=y
diff --git a/examples/openthread/ot_trel/sdkconfig.defaults b/examples/openthread/ot_trel/sdkconfig.defaults
index 92fc2c7df0d..367f2d10ced 100644
--- a/examples/openthread/ot_trel/sdkconfig.defaults
+++ b/examples/openthread/ot_trel/sdkconfig.defaults
@@ -11,7 +11,6 @@ CONFIG_PARTITION_TABLE_MD5=y
 #
 # mbedTLS
 #
-CONFIG_MBEDTLS_CMAC_C=y
 CONFIG_MBEDTLS_SSL_PROTO_DTLS=y
 CONFIG_MBEDTLS_KEY_EXCHANGE_ECJPAKE=y
 CONFIG_MBEDTLS_ECJPAKE_C=y