diff --git a/doc/btrbk.conf.5.asciidoc b/doc/btrbk.conf.5.asciidoc
index c66272f..a4050c3 100644
--- a/doc/btrbk.conf.5.asciidoc
+++ b/doc/btrbk.conf.5.asciidoc
@@ -140,15 +140,16 @@ Note that using ``long-iso'' has implications on the scheduling, see
 
 *snapshot_create* always|onchange|ondemand|no::
     If set to ``always'', snapshots are always created. If set to
-    ``onchange'', snapshots are only created if the source subvolume
-    has changed since the last snapshot (more precisely: if the btrfs
-    generation has been increased since the last snapshot). If set to
-    ``ondemand'', snapshots are only created if at least one target
-    subvolume is reachable (useful if you are tight on disk space and
-    you only need btrbk for backups to an external disk which is not
-    always connected). If set to ``no'', the snapshots are never
-    created (useful if another instance of btrbk is taking care of
-    snapshot creation). Defaults to ``always''.
+    ``onchange'', snapshots are only created if the last snapshot is
+    not up-to-date, i.e. the source subvolume has changed (more
+    precisely: the btrfs generation has been increased) since the last
+    snapshot was created. If set to ``ondemand'', snapshots are only
+    created if at least one target subvolume is reachable (useful if
+    you are tight on disk space and you only need btrbk for backups to
+    an external disk which is not always connected). If set to ``no'',
+    the snapshots are never created (useful if another instance of
+    btrbk is taking care of snapshot creation). Defaults to
+    ``always''.
 
 *incremental* yes|no|strict::
     If set, incremental backups are created. If set to ``strict'',