diff --git a/src/app/components/tree/tree.ts b/src/app/components/tree/tree.ts
index be53fb4c1b9..f8652632f7f 100755
--- a/src/app/components/tree/tree.ts
+++ b/src/app/components/tree/tree.ts
@@ -281,7 +281,10 @@ export class UITreeNode implements OnInit {
 
     ngOnInit() {
         (<TreeNode>this.node).parent = this.parentNode;
-        if (this.parentNode) {
+        const nativeElement = this.tree.el.nativeElement;
+        const pDialogWrapper = nativeElement.closest('p-dialog');
+
+        if (this.parentNode && !pDialogWrapper) {
             this.setAllNodesTabIndexes();
             this.tree.syncNodeOption(<TreeNode>this.node, <TreeNode<any>[]>this.tree.value, 'parent', this.tree.getNodeWithKey(<string>this.parentNode.key, <TreeNode<any>[]>this.tree.value));
         }