diff --git a/tf-psa-crypto/drivers/builtin/include/mbedtls/config_adjust_test_accelerators.h b/tf-psa-crypto/drivers/builtin/include/mbedtls/config_adjust_test_accelerators.h
index 32aa01524..7b50936dc 100644
--- a/tf-psa-crypto/drivers/builtin/include/mbedtls/config_adjust_test_accelerators.h
+++ b/tf-psa-crypto/drivers/builtin/include/mbedtls/config_adjust_test_accelerators.h
@@ -53,10 +53,6 @@
  * and use that as an external driver.
  */
 
-/* Enable the use of the test driver in the library, and build the generic
- * part of the test driver. */
-#define PSA_CRYPTO_DRIVER_TEST
-
 /* Use the accelerator driver for all cryptographic mechanisms for which
  * the test driver is implemented. This is copied from psa/crypto_config.h
  * with the parts not implemented by the test driver commented out. */