diff --git a/dist/src/NodeUtils.js b/dist/src/NodeUtils.js
index 05a21b8e..0e2f8ff5 100644
--- a/dist/src/NodeUtils.js
+++ b/dist/src/NodeUtils.js
@@ -79,14 +79,16 @@ class NodeUtils {
         return node.type === NodeType_1.NodeType.VariableDeclarator;
     }
     static parentize(node) {
+        let isRootNode = true;
         estraverse.replace(node, {
             enter: (node, parentNode) => {
                 Object.defineProperty(node, 'parentNode', {
                     configurable: true,
                     enumerable: true,
-                    value: parentNode || node,
+                    value: isRootNode ? NodeUtils.getProgramNode([node]) : parentNode || node,
                     writable: true
                 });
+                isRootNode = false;
             }
         });
     }
diff --git a/dist/src/Obfuscator.js b/dist/src/Obfuscator.js
index 5c16fbb9..289a02fe 100644
--- a/dist/src/Obfuscator.js
+++ b/dist/src/Obfuscator.js
@@ -54,14 +54,14 @@ class Obfuscator {
     afterObfuscation(astTree) {
         this.nodes.forEach((node) => {
             if (node.getAppendState() === AppendState_1.AppendState.AfterObfuscation) {
-                node.appendNode(NodeUtils_1.NodeUtils.getBlockScopeOfNode(astTree));
+                node.appendNode(astTree);
             }
         });
     }
     beforeObfuscation(astTree) {
         this.nodes.forEach((node) => {
             if (node.getAppendState() === AppendState_1.AppendState.BeforeObfuscation) {
-                node.appendNode(NodeUtils_1.NodeUtils.getBlockScopeOfNode(astTree));
+                node.appendNode(astTree);
             }
         });
     }
diff --git a/src/NodeUtils.ts b/src/NodeUtils.ts
index ee26f789..402ebc72 100644
--- a/src/NodeUtils.ts
+++ b/src/NodeUtils.ts
@@ -188,14 +188,18 @@ export class NodeUtils {
      * @param node
      */
     public static parentize (node: INode): void {
+        let isRootNode: boolean = true;
+
         estraverse.replace(node, {
             enter: (node: INode, parentNode: INode): any => {
                 Object.defineProperty(node, 'parentNode', {
                     configurable: true,
                     enumerable: true,
-                    value: parentNode || node,
+                    value: isRootNode ? NodeUtils.getProgramNode([node]) : parentNode || node,
                     writable: true
                 });
+
+                isRootNode = false;
             }
         });
     }
diff --git a/src/Obfuscator.ts b/src/Obfuscator.ts
index 09bf8c65..473f1a9b 100644
--- a/src/Obfuscator.ts
+++ b/src/Obfuscator.ts
@@ -101,7 +101,7 @@ export class Obfuscator {
     private afterObfuscation (astTree: INode): void {
         this.nodes.forEach((node: ICustomNode) => {
             if (node.getAppendState() === AppendState.AfterObfuscation) {
-                node.appendNode(NodeUtils.getBlockScopeOfNode(astTree));
+                node.appendNode(astTree);
             }
         });
     }
@@ -112,7 +112,7 @@ export class Obfuscator {
     private beforeObfuscation (astTree: INode): void {
         this.nodes.forEach((node: ICustomNode) => {
             if (node.getAppendState() === AppendState.BeforeObfuscation) {
-                node.appendNode(NodeUtils.getBlockScopeOfNode(astTree));
+                node.appendNode(astTree);
             }
         });
     };