diff --git a/docs/how_to_make_a_tahoe_release.txt b/docs/how_to_make_a_tahoe-lafs_release.txt
similarity index 100%
rename from docs/how_to_make_a_tahoe_release.txt
rename to docs/how_to_make_a_tahoe-lafs_release.txt
diff --git a/docs/performance.txt b/docs/performance.txt
index 03cf235d6..16ee370bb 100644
--- a/docs/performance.txt
+++ b/docs/performance.txt
@@ -51,7 +51,7 @@ notes: When asked to read an arbitrary range of an immutable file,
 === Downloading B bytes of an A-byte mutable file ===
 
 network: A
-memory footprint: N/k*A
+memory footprint: A
 
 notes: As currently implemented, mutable files must be downloaded in
        their entirety before any part of them can be read. We are