diff --git a/jso/apis/src/main/java/org/teavm/jso/dom/html/HTMLElement.java b/jso/apis/src/main/java/org/teavm/jso/dom/html/HTMLElement.java
index cd3b4d954..25055f0ee 100644
--- a/jso/apis/src/main/java/org/teavm/jso/dom/html/HTMLElement.java
+++ b/jso/apis/src/main/java/org/teavm/jso/dom/html/HTMLElement.java
@@ -28,10 +28,6 @@ import org.teavm.jso.dom.xml.Element;
 import org.teavm.jso.dom.xml.Node;
 import org.teavm.jso.dom.xml.NodeList;
 
-/**
- *
- * @author Alexey Andreev
- */
 public interface HTMLElement extends Element, ElementCSSInlineStyle, EventTarget, FocusEventTarget, MouseEventTarget,
         WheelEventTarget, KeyboardEventTarget, LoadEventTarget {
     @Override
@@ -118,6 +114,12 @@ public interface HTMLElement extends Element, ElementCSSInlineStyle, EventTarget
 
     TextRectangle getBoundingClientRect();
 
+    @JSProperty
+    String getClassName();
+
+    @JSProperty
+    void setClassName(String className);
+
     default HTMLElement withAttr(String name, String value) {
         setAttribute(name, value);
         return this;