diff --git a/check.md b/check.md
index d89ef2c..3eb2d49 100644
--- a/check.md
+++ b/check.md
@@ -13,6 +13,7 @@ OPTIONS:
    -fossils                 search fossils if a chunk can't be found
    -resurrect               turn referenced fossils back into chunks
    -files                   verify the integrity of every file
+   -chunks                  verify the integrity of every chunk
    -stats                   show deduplication statistics (imply -all and all revisions)
    -tabular                 show tabular usage and deduplication statistics (imply -stats, -all, and all revisions)
    -storage <storage name>  retrieve snapshots from the specified storage
@@ -26,6 +27,8 @@ The revision number is a number assigned to the snapshot when it is being create
 
 By default the *check* command only verifies the existence of chunks.  To verify the full integrity of a snapshot, you should specify the `-files` option, which will download chunks and compute file hashes in memory, to make sure that all hashes match.
 
+You can also verify the integrity of snapshots with the `-chunks` option. Unlike the `-files` option, this option will download and check each chunk once.
+
 By default the *check* command does not find fossils. If the `-fossils` option is specified, it will find the fossil if the referenced chunk does not exist.  if the `-resurrect` option is specified, it will turn the fossil back into a chunk.
 
 When the repository can have multiple storages (added by the *add* command), you can specify the storage to check by specifying the storage name.