diff --git a/src/menus/icon-menu.jsx b/src/menus/icon-menu.jsx
index 16e8c6a4c1fc3d..17a4bd5a26d530 100644
--- a/src/menus/icon-menu.jsx
+++ b/src/menus/icon-menu.jsx
@@ -292,7 +292,7 @@ const IconMenu = React.createClass({
 
     const iconButton = React.cloneElement(iconButtonElement, {
       onKeyboardFocus: this.props.onKeyboardFocus,
-      iconStyle: Object.assign(iconStyle, iconButtonElement.props.iconStyle),
+      iconStyle: Object.assign({}, iconStyle, iconButtonElement.props.iconStyle),
       onTouchTap: (event) => {
         this.open(Events.isKeyboard(event) ? 'keyboard' : 'iconTap', event);
         if (iconButtonElement.props.onTouchTap) iconButtonElement.props.onTouchTap(event);