diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile
index 325e9a9aff7f..db71672bf699 100644
--- a/share/man/man9/Makefile
+++ b/share/man/man9/Makefile
@@ -756,6 +756,7 @@ MLINKS+=sysctl_add_oid.9 SYSCTL_ADD_INT.9 \
 	sysctl_add_oid.9 SYSCTL_ADD_UINT.9 \
 	sysctl_add_oid.9 SYSCTL_ADD_ULONG.9 \
 	sysctl_add_oid.9 SYSCTL_CHILDREN.9 \
+	sysctl_add_oid.9 sysctl_move_oid.9 \
 	sysctl_add_oid.9 sysctl_remove_oid.9 \
 	sysctl_add_oid.9 SYSCTL_STATIC_CHILDREN.9
 MLINKS+=sysctl_ctx_init.9 sysctl_ctx_entry_add.9 \
diff --git a/share/man/man9/sysctl_add_oid.9 b/share/man/man9/sysctl_add_oid.9
index 46beea26fee1..68d40a1308d5 100644
--- a/share/man/man9/sysctl_add_oid.9
+++ b/share/man/man9/sysctl_add_oid.9
@@ -32,6 +32,7 @@
 .Os
 .Sh NAME
 .Nm sysctl_add_oid ,
+.Nm sysctl_move_oid ,
 .Nm sysctl_remove_oid
 .Nd runtime sysctl tree manipulation
 .Sh SYNOPSIS
@@ -51,6 +52,11 @@
 .Fa "const char *descr"
 .Fc
 .Ft int
+.Fo sysctl_move_oid
+.Fa "struct sysctl_oid *oidp"
+.Fa "struct sysctl_oid_list *parent"
+.Fc
+.Ft int
 .Fo sysctl_remove_oid
 .Fa "struct sysctl_oid *oidp"
 .Fa "int del"
@@ -333,6 +339,14 @@ A pointer to a textual description of the oid.
 .El
 .Pp
 The
+.Fn sysctl_move_oid
+function reparents an existing oid.
+The oid is assigned a new number as if it had been created with
+.Fa number
+set to
+.Dv OID_AUTO .
+.Pp
+The
 .Fn sysctl_remove_oid
 function removes a dynamically created oid from the tree,
 optionally freeing its resources.