diff --git a/src/java/org/apache/commons/collections/ExtendedProperties.java b/src/java/org/apache/commons/collections/ExtendedProperties.java
index 35245d58c..6b113707e 100644
--- a/src/java/org/apache/commons/collections/ExtendedProperties.java
+++ b/src/java/org/apache/commons/collections/ExtendedProperties.java
@@ -1708,6 +1708,10 @@ public class ExtendedProperties extends Hashtable {
      * <p>
      * NOTE: From Commons Collections 3.2 this method will pick up
      * any default parent Properties of the specified input object.
+     * <p>
+     * As with java.util.Properties(Properties), any non-String 
+     * values will not be passed on in the new ExtendedProperties 
+     * object.
      *
      * @param props  the properties object to convert
      * @return new ExtendedProperties created from props
@@ -1717,7 +1721,10 @@ public class ExtendedProperties extends Hashtable {
 
         for (Enumeration e = props.propertyNames(); e.hasMoreElements();) {
             String s = (String) e.nextElement();
-            c.setProperty(s, props.getProperty(s));
+            String value = props.getProperty(s);
+            if(value != null) {
+                c.setProperty(s, value);
+            }
         }
 
         return c;
diff --git a/src/test/org/apache/commons/collections/TestExtendedProperties.java b/src/test/org/apache/commons/collections/TestExtendedProperties.java
index 07f5231b0..ba6e514e7 100644
--- a/src/test/org/apache/commons/collections/TestExtendedProperties.java
+++ b/src/test/org/apache/commons/collections/TestExtendedProperties.java
@@ -428,4 +428,20 @@ public class TestExtendedProperties extends TestCase {
         assertEquals(3, props.size());
     }
 
+    public void testCollections299() {
+        Properties defaults = new Properties();
+        defaults.put("objectTrue", Boolean.TRUE);
+
+        Properties properties = new Properties(defaults);
+        properties.put("objectFalse", Boolean.FALSE);
+
+        ExtendedProperties extended = ExtendedProperties.convertProperties(properties);
+
+        assertNull(extended.getString("objectTrue"));
+        assertNull(extended.getString("objectFalse"));
+
+        assertNull(extended.get("objectTrue"));
+        assertNull(extended.get("objectFalse"));
+    }
+
 }