diff --git a/Types/StandardGroups.hs b/Types/StandardGroups.hs
index 434156a0ec..d95f28ee1b 100644
--- a/Types/StandardGroups.hs
+++ b/Types/StandardGroups.hs
@@ -78,9 +78,9 @@ preferredContent ClientGroup = lastResort $
 	"((exclude=*/archive/* and exclude=archive/*) or (" ++ notArchived ++ ")) and not unused"
 preferredContent TransferGroup = lastResort $
 	"not (inallgroup=client and copies=client:2) and (" ++ preferredContent ClientGroup ++ ")"
-preferredContent BackupGroup = "include=*"
+preferredContent BackupGroup = "include=* or unused"
 preferredContent IncrementalBackupGroup = lastResort
-	"include=* and (not copies=incrementalbackup:1)"
+	"(include=* or unused) and (not copies=incrementalbackup:1)"
 preferredContent SmallArchiveGroup = lastResort $
 	"(include=*/archive/* or include=archive/*) and (" ++ preferredContent FullArchiveGroup ++ ")"
 preferredContent FullArchiveGroup = lastResort notArchived
diff --git a/doc/preferred_content.mdwn b/doc/preferred_content.mdwn
index 92250c034f..6d1acfb0f3 100644
--- a/doc/preferred_content.mdwn
+++ b/doc/preferred_content.mdwn
@@ -113,7 +113,7 @@ any repository that can will back it up.)
 All content is preferred, unless it's for a file in a "archive" directory,
 which has reached an archive repository, or is unused.
 
-`(((exclude=*/archive/* and exclude=archive/*) or (not (copies=archive:1 or copies=smallarchive:1))) or roughlylackingcopies=1) and not unused`
+`(((exclude=*/archive/* and exclude=archive/*) or (not (copies=archive:1 or copies=smallarchive:1))) and not unused) or roughlylackingcopies=1`
 
 ### transfer
 
@@ -140,14 +140,14 @@ will be added later.
 
 All content is preferred.
 
-`include=*`
+`include=* or unused`
 
 ### incremental backup
 
 Only prefers content that's not already backed up to another backup
 or incremental backup repository.
 
-`(include=* and (not copies=backup:1) and (not copies=incrementalbackup:1)) or approxlackingcopies=1`
+`((include=* or unused) and (not copies=backup:1) and (not copies=incrementalbackup:1)) or approxlackingcopies=1`
 
 ### small archive