diff --git a/module/zfs/spa_errlog.c b/module/zfs/spa_errlog.c
index 7252fd534..afa9e9d0e 100644
--- a/module/zfs/spa_errlog.c
+++ b/module/zfs/spa_errlog.c
@@ -468,7 +468,7 @@ check_filesystem(spa_t *spa, uint64_t head_ds, zbookmark_err_phys_t *zep,
 	kmem_free(zc, sizeof (*zc));
 
 out:
-	kmem_free(snap_obj_array, sizeof (*snap_obj_array));
+	kmem_free(snap_obj_array, snap_count * sizeof (*snap_obj_array));
 	return (error);
 }