diff --git a/README.md b/README.md
index 52bb0eb..86a703f 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,10 @@ Command line interface for Windows XP license management, inspired by Microsoft'
 ## Usage
 `--GetProductID`: Gets the product ID (ex: `76477-755-3803223-21229`).
 
-`--SetProductKey`: Sets the product key.
+`--SetProductKey`: Sets the product key (tested to work with dashes).
 
 `--GetInstallationID`: Gets an Installation ID with **no dashes** (ex: `253286028742154311079061239762245184619981623171292574`). 
 
-`--SetConfirmationID`: Sets a Confirmation ID.
+`--SetConfirmationID`: Sets a Confirmation ID (tested to work with dashes).
 
 Make sure you do commands right, since, as of now, there's no checking to make sure it's correct or not!