diff --git a/doc/XMLschema.rst b/doc/XMLschema.rst
index 5a1e699a..a4315f4a 100644
--- a/doc/XMLschema.rst
+++ b/doc/XMLschema.rst
@@ -721,9 +721,7 @@
 |                          |    |    +-------------------------+-------------------------+-------------------------+ |
 |                          |    |    | :at:`solrefsmooth`      | :at:`solimpsmooth`      | :at:`vertex`            | |
 |                          |    |    +-------------------------+-------------------------+-------------------------+ |
-|                          |    |    | :at:`flat`              | :at:`initial`           | :at:`curve`             | |
-|                          |    |    +-------------------------+-------------------------+-------------------------+ |
-|                          |    |    | :at:`size`              |                         |                         | |
+|                          |    |    | :at:`initial`           | :at:`curve`             | :at:`size`              | |
 |                          |    |    +-------------------------+-------------------------+-------------------------+ |
 +--------------------------+----+------------------------------------------------------------------------------------+
 | |_3|:el:`plugin`         | \* | .. table::                                                                         |
diff --git a/src/xml/xml_native_reader.cc b/src/xml/xml_native_reader.cc
index bcf0b6c8..8f06d1bf 100644
--- a/src/xml/xml_native_reader.cc
+++ b/src/xml/xml_native_reader.cc
@@ -255,9 +255,9 @@ static const char* MJCF[nMJCF][mjXATTRNUM] = {
         {"light", "*", "15", "name", "class", "directional", "castshadow", "active",
             "pos", "dir", "attenuation", "cutoff", "exponent", "ambient", "diffuse", "specular",
             "mode", "target"},
-        {"composite", "*", "13", "prefix", "type", "count", "spacing", "offset",
+        {"composite", "*", "12", "prefix", "type", "count", "spacing", "offset",
             "flatinertia", "solrefsmooth", "solimpsmooth", "vertex",
-            "flat", "initial", "curve", "size"},
+            "initial", "curve", "size"},
         {"<"},
             {"plugin", "*", "3", "name", "plugin", "instance"},
             {"<"},