diff --git a/reference/json/jsonserializable/jsonserialize.xml b/reference/json/jsonserializable/jsonserialize.xml
index 3418dfb723..b5b30056e1 100644
--- a/reference/json/jsonserializable/jsonserialize.xml
+++ b/reference/json/jsonserializable/jsonserialize.xml
@@ -134,7 +134,7 @@ echo json_encode(new IntegerValue(1), JSON_PRETTY_PRINT);
    <example>
     <title>
      <methodname>JsonSerializable::jsonSerialize</methodname> example
-     returning an <type>string</type>
+     returning a <type>string</type>
     </title>
     <programlisting role="php">
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