diff --git a/tests/include/test/drivers/key_management.h b/tests/include/test/drivers/key_management.h
index 1d9bc43985..6bfa62ce90 100644
--- a/tests/include/test/drivers/key_management.h
+++ b/tests/include/test/drivers/key_management.h
@@ -16,6 +16,10 @@
 #define PSA_CRYPTO_TEST_DRIVER_BUILTIN_AES_KEY_SLOT     0
 #define PSA_CRYPTO_TEST_DRIVER_BUILTIN_ECDSA_KEY_SLOT   1
 
+extern const uint8_t mbedtls_test_driver_aes_key[16];
+extern const uint8_t mbedtls_test_driver_ecdsa_key[32];
+extern const uint8_t mbedtls_test_driver_ecdsa_pubkey[65];
+
 typedef struct {
     /* If non-null, on success, copy this to the output. */
     void *forced_output;