diff --git a/README.md b/README.md
index 4c01e41..8183094 100644
--- a/README.md
+++ b/README.md
@@ -102,7 +102,7 @@
 ## Text Tokens
 Text tokens can be used in the Save Text File and Save Image nodes. You can also add your own custom tokens with the Text Add Tokens node.
 
-The token name can be anything to define your token. It can also be a Regular Expression.
+The token name can be anything excluding the `:` character to define your token. It can also be simple Regular Expressions.
 
 ### Built-in Tokens
   - [time]