diff --git a/docs/abi-spec.rst b/docs/abi-spec.rst
index 44988c8dc..dd798c0a3 100644
--- a/docs/abi-spec.rst
+++ b/docs/abi-spec.rst
@@ -581,7 +581,7 @@ An event description is a JSON object with fairly similar fields:
   * ``name``: the name of the parameter.
   * ``type``: the canonical type of the parameter (more below).
   * ``components``: used for tuple types (more below).
-  * ``indexed``: ``true`` if the field is part of the log's topics, ``false`` if it one of the log's data segment.
+  * ``indexed``: ``true`` if the field is part of the log's topics, ``false`` if it is one of the log's data segments.
 
 - ``anonymous``: ``true`` if the event was declared as ``anonymous``.