slight rewording requested by reviewer (#758)
diff --git a/include/mbedtls/net_sockets.h b/include/mbedtls/net_sockets.h
index f09f8bf..38ec91b 100644
--- a/include/mbedtls/net_sockets.h
+++ b/include/mbedtls/net_sockets.h
@@ -120,7 +120,7 @@
* \param client_ip Will contain the client IP address, can be NULL
* \param buf_size Size of the client_ip buffer
* \param ip_len Will receive the size of the client IP written,
- * can be NULL if client_ip == NULL
+ * can be NULL if client_ip is null
*
* \return 0 if successful, or
* MBEDTLS_ERR_NET_ACCEPT_FAILED, or