diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/FormNode.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/FormNode.java
index 3a6945f0f..ef8f3373c 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/FormNode.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/FormNode.java
@@ -38,11 +38,7 @@ public class FormNode extends NodeExtension {
      * @param submitForm The form
      */
     public FormNode(FormNodeType formType, DataForm submitForm) {
-        super(formType.getNodeElement());
-
-        if (submitForm == null)
-            throw new IllegalArgumentException("Submit form cannot be null");
-        configForm = submitForm;
+        this(formType, null, submitForm);
     }
 
     /**
@@ -55,9 +51,6 @@ public class FormNode extends NodeExtension {
      */
     public FormNode(FormNodeType formType, String nodeId, DataForm submitForm) {
         super(formType.getNodeElement(), nodeId);
-
-        if (submitForm == null)
-            throw new IllegalArgumentException("Submit form cannot be null");
         configForm = submitForm;
     }
 
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/provider/FormNodeProvider.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/provider/FormNodeProvider.java
index 176d71544..329d5791a 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/provider/FormNodeProvider.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/provider/FormNodeProvider.java
@@ -35,6 +35,11 @@ import org.jivesoftware.smackx.xdata.packet.DataForm;
 public class FormNodeProvider extends EmbeddedExtensionProvider<FormNode> {
     @Override
     protected FormNode createReturnExtension(String currentElement, String currentNamespace, Map<String, String> attributeMap, List<? extends ExtensionElement> content) {
-        return new FormNode(FormNodeType.valueOfFromElementName(currentElement, currentNamespace), attributeMap.get("node"), (DataForm) content.iterator().next());
+        DataForm dataForm = null;
+        if (!content.isEmpty()) {
+            dataForm = (DataForm) content.get(0);
+        }
+
+        return new FormNode(FormNodeType.valueOfFromElementName(currentElement, currentNamespace), attributeMap.get("node"), dataForm);
     }
 }