diff --git a/README.md b/README.md
index 6824be2..e36d2b2 100644
--- a/README.md
+++ b/README.md
@@ -37,4 +37,4 @@ The list of existing tools in other Thingweb repositories, which will be moved h
 
 -   TD Validation: https://github.com/eclipse-thingweb/playground/tree/master/packages/core . Also in node-wot via simple AJV/Schema plus sanity checks on forms.
 -   Default addition or removal for TDs: https://github.com/eclipse-thingweb/playground/tree/master/packages/defaults
--   Feature/Assertion detecter for TDs: https://github.com/eclipse-thingweb/playground/tree/master/packages/assertions (will be moved to W3C Thing Description Repository)
+-   Feature/Assertion detector for TDs: https://github.com/eclipse-thingweb/playground/tree/master/packages/assertions (will be moved to W3C Thing Description Repository)