diff --git a/reference/mysqli/mysqli_result/fetch-field.xml b/reference/mysqli/mysqli_result/fetch-field.xml
index 4c766bd517..f31b62c1b0 100644
--- a/reference/mysqli/mysqli_result/fetch-field.xml
+++ b/reference/mysqli/mysqli_result/fetch-field.xml
@@ -68,6 +68,18 @@
orgtable
Original table name if an alias was specified
+
+ def
+ Reserved for default value, currently always ""
+
+
+ db
+ Database (since PHP 5.3.6)
+
+
+ catalog
+ The catalog name, always "def" (since PHP 5.3.6)
+
max_length
The maximum width of the field for the result set.