diff --git a/qapi/machine.json b/qapi/machine.json
index 704b2b0fe3..6c11e3cf3a 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -20,8 +20,6 @@
 #        prefix to produce the corresponding QEMU executable name. This
 #        is true even for "qemu-system-x86_64".
 #
-# ppcemb: dropped in 3.1
-#
 # Since: 3.0
 ##
 { 'enum' : 'SysEmuTarget',
diff --git a/qapi/net.json b/qapi/net.json
index 80dcf0df06..1cb9a7d782 100644
--- a/qapi/net.json
+++ b/qapi/net.json
@@ -446,8 +446,6 @@
 # Available netdev drivers.
 #
 # Since: 2.7
-#
-# 'dump': dropped in 2.12
 ##
 { 'enum': 'NetClientDriver',
   'data': [ 'none', 'nic', 'user', 'tap', 'l2tpv3', 'socket', 'vde',
@@ -493,8 +491,6 @@
 # @opts: device type specific properties (legacy)
 #
 # Since: 1.2
-#
-# 'vlan': dropped in 3.0
 ##
 { 'struct': 'NetLegacy',
   'data': {
diff --git a/qapi/ui.json b/qapi/ui.json
index 89126da395..e16e98a060 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -779,7 +779,6 @@
 # @ac_forward: since 2.10
 # @ac_refresh: since 2.10
 # @ac_bookmarks: since 2.10
-# altgr, altgr_r: dropped in 2.10
 #
 # @muhenkan: since 2.12
 # @katakanahiragana: since 2.12