diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index 07acbed..f10d0aa 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -196,6 +196,7 @@
 #define XFS_FSOP_GEOM_SICK_RT_BITMAP	(1 << 4)  /* realtime bitmap */
 #define XFS_FSOP_GEOM_SICK_RT_SUMMARY	(1 << 5)  /* realtime summary */
 #define XFS_FSOP_GEOM_SICK_QUOTACHECK	(1 << 6)  /* quota counts */
+#define XFS_FSOP_GEOM_SICK_NLINKS	(1 << 7)  /* inode link counts */
 
 /* Output for XFS_FS_COUNTS */
 typedef struct xfs_fsop_counts {
diff --git a/libxfs/xfs_health.h b/libxfs/xfs_health.h
index 5626e53..2bfe2dc 100644
--- a/libxfs/xfs_health.h
+++ b/libxfs/xfs_health.h
@@ -42,6 +42,7 @@
 #define XFS_SICK_FS_GQUOTA	(1 << 2)  /* group quota */
 #define XFS_SICK_FS_PQUOTA	(1 << 3)  /* project quota */
 #define XFS_SICK_FS_QUOTACHECK	(1 << 4)  /* quota counts */
+#define XFS_SICK_FS_NLINKS	(1 << 5)  /* inode link counts */
 
 /* Observable health issues for realtime volume metadata. */
 #define XFS_SICK_RT_BITMAP	(1 << 0)  /* realtime bitmap */
@@ -79,7 +80,8 @@
 				 XFS_SICK_FS_UQUOTA | \
 				 XFS_SICK_FS_GQUOTA | \
 				 XFS_SICK_FS_PQUOTA | \
-				 XFS_SICK_FS_QUOTACHECK)
+				 XFS_SICK_FS_QUOTACHECK | \
+				 XFS_SICK_FS_NLINKS)
 
 #define XFS_SICK_RT_PRIMARY	(XFS_SICK_RT_BITMAP | \
 				 XFS_SICK_RT_SUMMARY)