diff --git a/html/test/unit/src/org/netbeans/modules/html/HtmlDataObjectTest.java b/html/test/unit/src/org/netbeans/modules/html/HtmlDataObjectTest.java
--- a/html/test/unit/src/org/netbeans/modules/html/HtmlDataObjectTest.java
+++ b/html/test/unit/src/org/netbeans/modules/html/HtmlDataObjectTest.java
@@ -47,7 +47,10 @@
 import junit.framework.TestCase;
 import org.netbeans.junit.MockServices;
 import org.netbeans.spi.queries.FileEncodingQueryImplementation;
+import org.openide.cookies.EditorCookie;
+import org.openide.cookies.SaveCookie;
 import org.openide.filesystems.FileObject;
+import org.openide.filesystems.FileSystem;
 import org.openide.filesystems.FileUtil;
 import org.openide.loaders.DataObject;
 import org.openide.nodes.Children;
@@ -59,7 +62,7 @@
  * @author Jaroslav Tulach
  */
 public class HtmlDataObjectTest extends TestCase {
-    @SuppressWarnings("deprecation")
+
     private static void init() {
         FileUtil.setMIMEType("html", "text/html");
     }
@@ -114,5 +117,15 @@
         }
     } 
     
-    
+    public void testSetModifiedRemovesSaveCookie() throws Exception {
+        FileSystem fs = FileUtil.createMemoryFileSystem();
+        FileObject f = fs.getRoot().createData("index.html");
+        DataObject dob = DataObject.find(f);
+        assertEquals("Wrong DataObject sub class.", HtmlDataObject.class, dob.getClass());
+        dob.getLookup().lookup(EditorCookie.class).openDocument().insertString(0, "modified", null);
+        assertTrue("Should be modified.", dob.isModified());
+        dob.setModified(false);
+        assertFalse("Should not be modified.", dob.isModified());
+        assertNull("Should not have SaveCookie.", dob.getLookup().lookup(SaveCookie.class));
+    }
 }