diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index a8bc45ea9..62d9d4bae 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -2243,7 +2243,7 @@
  *
  * Uncomment to enable invasive tests.
  */
-//#define MBEDTLS_TEST_HOOKS
+#define MBEDTLS_TEST_HOOKS
 
 /**
  * \def MBEDTLS_THREADING_ALT
diff --git a/tests/include/test/psa_memory_poisoning_wrappers.h b/tests/include/test/psa_memory_poisoning_wrappers.h
index 8b2dcfa04..0052c2fae 100644
--- a/tests/include/test/psa_memory_poisoning_wrappers.h
+++ b/tests/include/test/psa_memory_poisoning_wrappers.h
@@ -44,4 +44,4 @@ psa_status_t wrap_psa_cipher_encrypt(mbedtls_svc_key_id_t key,
 
 #endif /* MBEDTLS_TEST_HOOKS && MBEDTLS_TEST_MEMORY_CAN_POISON */
 
-#endif /* PSA_MEMORY_POISONING_WRAPPERS_H */
\ No newline at end of file
+#endif /* PSA_MEMORY_POISONING_WRAPPERS_H */