diff --git a/api/HTMLSlotElement.json b/api/HTMLSlotElement.json
index e67f8765201f30..06250373e2a4b4 100644
--- a/api/HTMLSlotElement.json
+++ b/api/HTMLSlotElement.json
@@ -41,7 +41,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLSlotElement/assign",
           "spec_url": "https://html.spec.whatwg.org/multipage/scripting.html#dom-slot-assign",
           "tags": [
-            "web-features:slot"
+            "web-features:slot-assign"
           ],
           "support": {
             "chrome": {
diff --git a/api/ShadowRoot.json b/api/ShadowRoot.json
index 1270f80a3e770c..cb322bbe6a0ad1 100644
--- a/api/ShadowRoot.json
+++ b/api/ShadowRoot.json
@@ -664,7 +664,7 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/slotAssignment",
           "spec_url": "https://dom.spec.whatwg.org/#dom-shadowroot-slotassignment",
           "tags": [
-            "web-features:slot"
+            "web-features:slot-assign"
           ],
           "support": {
             "chrome": {