diff --git a/README.md b/README.md
index 8ae9aed..47898d3 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 A lazily-written, df-like, Windows disk information tool.
 
+For base 10 reports, use `-b`.
+
 # Examples
 
 ```