diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 30ab72b2a4..9386cffba2 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -54,20 +54,6 @@ as short-form boolean values, and passed to plugins as ``arg_name=on``.
 However, short-form booleans are deprecated and full explicit ``arg_name=on``
 form is preferred.
 
-``-smp`` (Unsupported "parameter=1" SMP configurations) (since 9.0)
-'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-Specified CPU topology parameters must be supported by the machine.
-
-In the SMP configuration, users should provide the CPU topology parameters that
-are supported by the target machine.
-
-However, historically it was allowed for users to specify the unsupported
-topology parameter as "1", which is meaningless. So support for this kind of
-configurations (e.g. -smp drawers=1,books=1,clusters=1 for x86 PC machine) is
-marked deprecated since 9.0, users have to ensure that all the topology members
-described with -smp are supported by the target machine.
-
 QEMU Machine Protocol (QMP) commands
 ------------------------------------