diff --git a/docs/sphinx/qapidoc.py b/docs/sphinx/qapidoc.py
index efcd846..2b06750 100644
--- a/docs/sphinx/qapidoc.py
+++ b/docs/sphinx/qapidoc.py
@@ -230,15 +230,15 @@ def _nodes_for_enum_values(self, doc):
         section += dlnode
         return [section]
 
-    def _nodes_for_arguments(self, doc, boxed_arg_type):
+    def _nodes_for_arguments(self, doc, arg_type):
         """Return list of doctree nodes for the arguments section"""
-        if boxed_arg_type:
+        if arg_type and not arg_type.is_implicit():
             assert not doc.args
             section = self._make_section('Arguments')
             dlnode = nodes.definition_list()
             dlnode += self._make_dlitem(
                 [nodes.Text('The members of '),
-                 nodes.literal('', boxed_arg_type.name)],
+                 nodes.literal('', arg_type.name)],
                 None)
             section += dlnode
             return [section]
@@ -352,8 +352,7 @@ def visit_command(self, name, info, ifcond, features, arg_type,
                       allow_preconfig, coroutine):
         doc = self._cur_doc
         self._add_doc('Command',
-                      self._nodes_for_arguments(doc,
-                                                arg_type if boxed else None)
+                      self._nodes_for_arguments(doc, arg_type)
                       + self._nodes_for_features(doc)
                       + self._nodes_for_sections(doc)
                       + self._nodes_for_if_section(ifcond))
@@ -361,8 +360,7 @@ def visit_command(self, name, info, ifcond, features, arg_type,
     def visit_event(self, name, info, ifcond, features, arg_type, boxed):
         doc = self._cur_doc
         self._add_doc('Event',
-                      self._nodes_for_arguments(doc,
-                                                arg_type if boxed else None)
+                      self._nodes_for_arguments(doc, arg_type)
                       + self._nodes_for_features(doc)
                       + self._nodes_for_sections(doc)
                       + self._nodes_for_if_section(ifcond))
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 9ef23ec..096bdbe 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1675,8 +1675,6 @@
 #
 # Takes a synchronous snapshot of a block device.
 #
-# For the arguments, see the documentation of BlockdevSnapshotSync.
-#
 # Errors:
 #     - If @device is not a valid block device, DeviceNotFound
 #
@@ -1705,8 +1703,6 @@
 # device, the block device changes to using 'overlay' as its new
 # active image.
 #
-# For the arguments, see the documentation of BlockdevSnapshot.
-#
 # Features:
 #
 # @allow-write-only-overlay: If present, the check whether this
@@ -6065,9 +6061,6 @@
 # string, or a snapshot with name already exists, the operation will
 # fail.
 #
-# For the arguments, see the documentation of
-# BlockdevSnapshotInternal.
-#
 # Errors:
 #     - If @device is not a valid block device, GenericError
 #     - If any snapshot matching @name exists, or @name is empty,