diff --git a/doc/avatars.png b/doc/avatars.png
index 1ef57875..d3ba51c2 100644
Binary files a/doc/avatars.png and b/doc/avatars.png differ
diff --git a/doc/binary_formats.md b/doc/binary_formats.md
index 8b187860..051e2ba3 100644
--- a/doc/binary_formats.md
+++ b/doc/binary_formats.md
@@ -63,7 +63,7 @@ std::vector<uint8_t> v;
 json j3 = json::from_cbor(v);                         // 1
 
 const char* buff;
-ize_t buff_size;
+std::size_t buff_size;
 json j4 = json::from_cbor(buff, buff_size);           // 2
 ```