1 files changed, 4 insertions, 0 deletions

diff --git a/doc/ext_buffer.html b/doc/ext_buffer.html
index 63c2efe3..309b496b 100644
--- a/doc/ext_buffer.html
+++ b/doc/ext_buffer.html
@@ -448,6 +448,10 @@ encoded data. The stand-alone function throws when there's left-over
 data after decoding a single top-level object. The buffer method leaves
 any left-over data in the buffer.
 </p>
+<p>
+Attempting to de-serialize an FFI type will throw an error, if the FFI
+library is not built-in or has not been loaded, yet.
+</p>
 
 <h3 id="serialize_options">Serialization Options</h3>
 <p>