diff --git a/include/mbedtls/compat-2.x.h b/include/mbedtls/compat-2.x.h
index fe07790..cdf81dc 100644
--- a/include/mbedtls/compat-2.x.h
+++ b/include/mbedtls/compat-2.x.h
@@ -34,14 +34,6 @@
  */
 #define mbedtls_ctr_drbg_update_ret   mbedtls_ctr_drbg_update
 #define mbedtls_hmac_drbg_update_ret  mbedtls_hmac_drbg_update
-#define mbedtls_md2_starts_ret        mbedtls_md2_starts
-#define mbedtls_md2_update_ret        mbedtls_md2_update
-#define mbedtls_md2_finish_ret        mbedtls_md2_finish
-#define mbedtls_md2_ret               mbedtls_md2
-#define mbedtls_md4_starts_ret        mbedtls_md4_starts
-#define mbedtls_md4_update_ret        mbedtls_md4_update
-#define mbedtls_md4_finish_ret        mbedtls_md4_finish
-#define mbedtls_md4_ret               mbedtls_md4
 #define mbedtls_md5_starts_ret        mbedtls_md5_starts
 #define mbedtls_md5_update_ret        mbedtls_md5_update
 #define mbedtls_md5_finish_ret        mbedtls_md5_finish
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index b566bc7..e8e2b1b 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -335,6 +335,8 @@
 //#define MBEDTLS_ECP_ALT
 
 /**
+ * \def MBEDTLS_SHA256_PROCESS_ALT
+ *
  * MBEDTLS__FUNCTION_NAME__ALT: Uncomment a macro to let mbed TLS use you
  * alternate core implementation of symmetric crypto or hash function. Keep in
  * mind that function prototypes should remain the same.