diff --git a/readme.md b/readme.md
index 29e7658..de87f49 100644
--- a/readme.md
+++ b/readme.md
@@ -10,7 +10,7 @@ Correctly handles Unicode strings.
 $ npm install camelcase
 ```
 
-*If you need to support Firefox, stay on version 5 as version 6 uses regex features not available in Firefox.*
+*If you need to support Firefox < 78, stay on version 5 as version 6 uses regex features not available in Firefox < 78.*
 
 ## Usage