Fix minor typo in comments (#531)
diff --git a/include/mbedtls/rsa.h b/include/mbedtls/rsa.h
index 9c8645d..35185df 100644
--- a/include/mbedtls/rsa.h
+++ b/include/mbedtls/rsa.h
@@ -99,7 +99,7 @@
mbedtls_mpi Vf; /*!< cached un-blinding value */
int padding; /*!< MBEDTLS_RSA_PKCS_V15 for 1.5 padding and
- RSA_PKCS_v21 for OAEP/PSS */
+ MBEDTLS_RSA_PKCS_v21 for OAEP/PSS */
int hash_id; /*!< Hash identifier of mbedtls_md_type_t as
specified in the mbedtls_md.h header file
for the EME-OAEP and EMSA-PSS