diff --git a/javascript/duktape/Node.bnd b/javascript/duktape/Node.bnd
index 0b1bfe390..3a723ddfb 100644
--- a/javascript/duktape/Node.bnd
+++ b/javascript/duktape/Node.bnd
@@ -132,7 +132,9 @@ getter Node::firstChild()
 	dom_exception exc;
 	dom_node *n;
 	exc = dom_node_get_first_child(priv->node, &n);
-	if (exc != DOM_NO_ERR) return 0;
+	if ((exc != DOM_NO_ERR) || (n == NULL)) {
+		return 0;
+	}
 	if (dukky_push_node(ctx, n) == false) {
 		dom_node_unref(n);
 		return 0;
@@ -146,7 +148,9 @@ getter Node::lastChild()
 	dom_exception exc;
 	dom_node *n;
 	exc = dom_node_get_last_child(priv->node, &n);
-	if (exc != DOM_NO_ERR) return 0;
+	if ((exc != DOM_NO_ERR) || (n == NULL)) {
+		return 0;
+	}
 	if (dukky_push_node(ctx, n) == false) {
 		dom_node_unref(n);
 		return 0;
@@ -160,7 +164,9 @@ getter Node::previousSibling()
 	dom_exception exc;
 	dom_node *n;
 	exc = dom_node_get_previous_sibling(priv->node, &n);
-	if (exc != DOM_NO_ERR) return 0;
+	if ((exc != DOM_NO_ERR) || (n == NULL)) {
+		return 0;
+	}
 	if (dukky_push_node(ctx, n) == false) {
 		dom_node_unref(n);
 		return 0;
@@ -174,7 +180,9 @@ getter Node::nextSibling()
 	dom_exception exc;
 	dom_node *n;
 	exc = dom_node_get_next_sibling(priv->node, &n);
-	if (exc != DOM_NO_ERR) return 0;
+	if ((exc != DOM_NO_ERR) || (n == NULL)) {
+		return 0;
+	}
 	if (dukky_push_node(ctx, n) == false) {
 		dom_node_unref(n);
 		return 0;