diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index e21344287..7a32916d7 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -3961,6 +3961,7 @@ component_test_tls13_only_psk () {
     scripts/config.py unset MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED
     scripts/config.py unset MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL_ENABLED
     scripts/config.py unset MBEDTLS_ECDH_C
+    scripts/config.py unset MBEDTLS_DHM_C
     scripts/config.py unset MBEDTLS_X509_CRT_PARSE_C
     scripts/config.py unset MBEDTLS_X509_RSASSA_PSS_SUPPORT
     scripts/config.py unset MBEDTLS_SSL_SERVER_NAME_INDICATION