diff --git a/api.rst b/api.rst
index 0c7f936..05acafc 100644
--- a/api.rst
+++ b/api.rst
@@ -541,8 +541,8 @@ are described in :numref:`tab:valuetype`.
    |                             |      | This type is used to group logically related options.  A group option  |
    |                             |      | is in effect up to the point where another group option is encountered |
    |                             |      | (or up to the end of the option list, if there are no other group      |
-   |                             |      | options).  For group options, only members :member:`title` and         |
-   |                             |      | :member:`type` are valid in the option descriptor.                     |
+   |                             |      | options).  For group options, only members :member:`title`,            |
+   |                             |      | :member:`desc`, and :member:`type` are valid in the option descriptor. |
    +-----------------------------+------+------------------------------------------------------------------------+
 
 .. index:: SANE_Unit
@@ -776,7 +776,7 @@ authentication.
     ::
 
         SANE_Status sane_init (SANE_Int * version_code,
-                               SANE_Authorization_Callback authorize);
+                               SANE_Auth_Callback authorize);
 
 The authorization function may be called by a backend in response to any
 of the following calls:
@@ -794,7 +794,7 @@ multi-user system that authenticates users through a login process a
 backend could automatically lookup the appropriate password based on
 resource- and user-name.
 
-.. index:: SANE_Authorization_Callback, domain, username, password
+.. index:: SANE_Authorization_Callback, SANE_Auth_Callback, domain, username, password
 
 The authentication function type has the following declaration:
 
@@ -803,7 +803,7 @@ The authentication function type has the following declaration:
         #define SANE_MAX_USERNAME_LEN   128
         #define SANE_MAX_PASSWORD_LEN   128
 
-        typedef void (*SANE_Authorization_Callback)
+        typedef void (*SANE_Auth_Callback)
             (SANE_String_Const resource,
              SANE_Char username[SANE_MAX_USERNAME_LEN],
              SANE_Char password[SANE_MAX_PASSWORD_LEN]);