diff --git a/api/HTMLMarqueeElement.json b/api/HTMLMarqueeElement.json
index 7b1198ad8e8afb..9bce7f24d2bb62 100644
--- a/api/HTMLMarqueeElement.json
+++ b/api/HTMLMarqueeElement.json
@@ -331,7 +331,7 @@
           }
         }
       },
-      "scrollamount": {
+      "scrollAmount": {
         "__compat": {
           "support": {
             "chrome": {