diff --git a/TODO.md b/TODO.md
index 17e0f67..d941bff 100644
--- a/TODO.md
+++ b/TODO.md
@@ -3,7 +3,7 @@
   * improve naming in perf.go in accordance with https://prometheus.io/docs/instrumenting/writing_exporters/#naming
   * ~~perf: export all disks ... currently only first disk is exported~~
   * ~~use help text to indicate underlying WMI metrics, rather than human-readable text~~
-  * perf: hardcode "_Total" for always exlusion
+  * perf: hardcode the "_Total" disk and always exclude it
   * perf: FreeMegabytes should be a ratio
   * perf: dont export Avg* and *_Base values