diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 6e5d9236e..30d10cb10 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1568,6 +1568,7 @@ component_test_crypto_for_psa_service () {
   # Crypto stuff with no PSA interface
   scripts/config.py unset MBEDTLS_BASE64_C
   # Keep MBEDTLS_CIPHER_C because psa_crypto_cipher, CCM and GCM need it.
+  scripts/config.py unset MBEDTLS_HKDF_C # PSA's HKDF is independent
   # Keep MBEDTLS_MD_C because deterministic ECDSA needs it for HMAC_DRBG.
   scripts/config.py unset MBEDTLS_NIST_KW_C
   scripts/config.py unset MBEDTLS_PEM_PARSE_C