diff --git a/doc/src/extras.rst b/doc/src/extras.rst
index 52a7056f..7fab3384 100644
--- a/doc/src/extras.rst
+++ b/doc/src/extras.rst
@@ -437,14 +437,17 @@ user-defined |range| types can be adapted using `register_range()`.
 
     `!Range` objects are immutable, hashable, and support the ``in`` operator
     (checking if an element is within the range). They can be tested for
-    equivalence. Empty ranges evaluate to `!False` in
-    boolean context, nonempty evaluate to `!True`.
-
-    `!Range` objects can be sorted although, as on the server-side,
-    this ordering is not particularly meangingful.
+    equivalence. Empty ranges evaluate to `!False` in boolean context,
+    nonempty evaluate to `!True`.
 
     .. versionchanged:: 2.5.3
 
+        `!Range` objects can be sorted although, as on the server-side, this
+        ordering is not particularly meangingful. It is only meant to be used
+        by programs assuming objects using `!Range` as primary key can be
+        sorted on them. In previous versions comparing `!Range`\s raises
+        `!TypeError`.
+
     Although it is possible to instantiate `!Range` objects, the class doesn't
     have an adapter registered, so you cannot normally pass these instances as
     query arguments. To use range objects as query arguments you can either