diff --git a/README.md b/README.md
index 16b5ac4..b81ae38 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,9 @@
-# isotope-product-licenses
\ No newline at end of file
+# isotope-product-licenses
+
+This extension complements a license key management and its assignment to products which can then be picked up (via insert tags) and sent via the Notification Center.
+
+The following insert tags are available:
+- `{{license_collection::*}}`
+- `{{license_product::*}}`
+
+* = Id of collection / product
\ No newline at end of file
diff --git a/src/EventListener/InsertTagsListener.php b/src/EventListener/InsertTagsListener.php
index c960d99..84c3227 100644
--- a/src/EventListener/InsertTagsListener.php
+++ b/src/EventListener/InsertTagsListener.php
@@ -25,7 +25,7 @@ class InsertTagsListener
 {
     private const SUPPORTED_TAGS = [
         'license_product',
-        'license_card'
+        'license_collection'
     ];
 
     /**
@@ -75,7 +75,7 @@ private function replaceLicenseInsertTags($insertTag, $intId)
         $arrProductIds = [];
         $arrProductLicenses = [];
 
-        if($insertTag === 'license_card')
+        if($insertTag === 'license_collection')
         {
             $productsInCollection = ProductCollectionItem::findBy(['pid=?'], $intId, array());