diff --git a/src/browser/webapi/element/DOMStringMap.zig b/src/browser/webapi/element/DOMStringMap.zig
index d22667f4f..dc05b445f 100644
--- a/src/browser/webapi/element/DOMStringMap.zig
+++ b/src/browser/webapi/element/DOMStringMap.zig
@@ -141,7 +141,7 @@ pub const JsApi = struct {
     // element's data-* attributes, in attribute order.
     fn getNames(self: *DOMStringMap, exec: *const js.Execution) !js.Array {
         var names: std.ArrayList([]const u8) = .empty;
-        for (try self._element._attributes.getNames(exec.call_arena)) |attr_name| {
+        for (try self._element._attributes.getNames(exec.local_arena)) |attr_name| {
             const camel = (try kebabToCamel(exec.local_arena, attr_name)) orelse continue;
             try names.append(exec.local_arena, camel);
         }