diff --git a/SftpFrontend.md b/SftpFrontend.md
index 9264153..1c2b03a 100644
--- a/SftpFrontend.md
+++ b/SftpFrontend.md
@@ -66,4 +66,4 @@ As of Tahoe v1.7.0 final, filenames are normalized to NFC, which means that it i
 
 ### Performance
 
-The SFTP frontend currently performs no caching (sshfs does cache by default, although not very aggressively). Some applications assume that file operations have relatively low latency, and may have very poor performance when working directly with a Tahoe filesystem. In this case it may be better to copy files to a local filesystem and work on them there, then copy back any changes. Note that just browsing a directory may cause some apps to perform many unnecessary reads or attribute checks of files in that directory.
+The SFTP frontend currently performs no caching (sshfs does cache, but only for 20 seconds with the default settings). Some applications assume that file operations have relatively low latency, and may have very poor performance when working directly with a Tahoe filesystem. In this case it may be better to copy files to a local filesystem and work on them there, then copy back any changes. Note that just browsing a directory may cause some apps to perform many unnecessary reads or attribute checks of files in that directory.