diff --git a/css/at-rules.json b/css/at-rules.json
index ccbdbf3a..74c627ce 100644
--- a/css/at-rules.json
+++ b/css/at-rules.json
@@ -521,7 +521,7 @@
       "CSSStartingStyleRule"
     ],
     "groups": [
-      "CSS Animations"
+      "CSS Transitions"
     ],
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@starting-style"
diff --git a/css/types.json b/css/types.json
index e23a0354..4466d892 100644
--- a/css/types.json
+++ b/css/types.json
@@ -114,7 +114,6 @@
   "easing-function": {
     "groups": [
       "CSS Animations",
-      "CSS Transitions",
       "CSS Types"
     ],
     "status": "standard",