diff --git a/man2/quotactl.2 b/man2/quotactl.2
index 63a493231..d22d8c584 100644
--- a/man2/quotactl.2
+++ b/man2/quotactl.2
@@ -30,7 +30,9 @@ quotactl \- manipulate disk quotas
 .SH SYNOPSIS
 .nf
 .B #include <sys/quota.h>
-.B #include <xfs/xqm.h> /* for XFS quotas */
+.BR "#include <xfs/xqm.h>" " /* Definition of " Q_X* " and " XFS_QUOTA_* \
+" constants"
+.RB    "                        (or " <linux/dqblk_xfs.h> "; see NOTES) */"
 .PP
 .BI "int quotactl(int " cmd ", const char *" special ", int " id \
 ", caddr_t " addr );