diff --git a/include/mbedtls/net_sockets.h b/include/mbedtls/net_sockets.h
index 14316fb..1096d66 100644
--- a/include/mbedtls/net_sockets.h
+++ b/include/mbedtls/net_sockets.h
@@ -286,6 +286,10 @@
  * \brief          Closes down the connection and free associated data
  *
  * \param ctx      The context to close
+ *
+ * \note           This function frees and clears data associated with the
+ *                 context but does not free the memory pointed to by \p ctx.
+ *                 This memory is the responsibility of the caller.
  */
 void mbedtls_net_close(mbedtls_net_context *ctx);
 
@@ -293,6 +297,10 @@
  * \brief          Gracefully shutdown the connection and free associated data
  *
  * \param ctx      The context to free
+ *
+ * \note           This function frees and clears data associated with the
+ *                 context but does not free the memory pointed to by \p ctx.
+ *                 This memory is the responsibility of the caller.
  */
 void mbedtls_net_free(mbedtls_net_context *ctx);