diff --git a/include/psa/crypto.h b/include/psa/crypto.h
index bbdd06d..e84c757 100644
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -4626,6 +4626,8 @@
  * \retval #PSA_ERROR_HARDWARE_FAILURE
  * \retval #PSA_ERROR_CORRUPTION_DETECTED
  * \retval #PSA_ERROR_STORAGE_FAILURE
+ * \retval #PSA_ERROR_INVALID_ARGUMENT
+ *         The input is not valid for the algorithm, ciphersuite or \p step.
  * \retval #PSA_ERROR_BAD_STATE
  *         The library has not been previously initialized by psa_crypto_init().
  *         It is implementation-dependent whether a failure to initialize