diff --git a/man2/quotactl.2 b/man2/quotactl.2
index 2fc791f31..c68b44fab 100644
--- a/man2/quotactl.2
+++ b/man2/quotactl.2
@@ -657,13 +657,17 @@ Quotas must have already been turned off.
 The
 .I id
 argument is ignored.
-.PP
-There is no command equivalent to
-.B Q_SYNC
-for XFS since
+.TP
+.B Q_XQUOTASYNC
+This command was an XFS quota equivalent to
+.IR Q_SYNC ,
+.\" 4b217ed9e30f94b6e8e5e262020ef0ceab6113af
+but it is no-op since Linux 3.4, as
 .BR sync (1)
-writes quota information to disk (in addition to the other filesystem
-metadata that it writes out).
+writes quota information to disk now (in addition to the other filesystem
+metadata that it writes out). The
+.IR special ", " id " and " addr
+arguments are ignored.
 .SH RETURN VALUE
 .LP
 On success,