diff --git a/launch/node.launch b/launch/node.launch
index 0a6375da208241069c59c5e7787c78f5b21273f0..6cd06a3720492de4b20be14cb944d97c290f6008 100644
--- a/launch/node.launch
+++ b/launch/node.launch
@@ -8,7 +8,7 @@
   <arg name="service_server_name"   default="~service_server_name"/>
   <arg name="service_client_name"   default="~service_client_name"/>
   <arg name="param_file"            default="$(find iri_python_template)/config/params.yaml"/>
-  <arg name="virtual_env_path"      default="$(env HOME)/virtual_env"/>
+  <arg name="virtual_env_path"      default="$(env HOME)/virtualenv/test_venv"/>
   
   <arg name="output" default="screen"/>
   
diff --git a/launch/test.launch b/launch/test.launch
index 36add0f3e4d06ea4588e8f259dd7570c3c946cdc..ffbf15578d25ec1190b10433bbbf4b2669f230c5 100644
--- a/launch/test.launch
+++ b/launch/test.launch
@@ -13,7 +13,7 @@
     <arg name="service_server_name"   value="/test_node/service"/>
     <arg name="service_client_name"   value="/test_node/service"/>
     <arg name="param_file"            value="$(find iri_python_template)/config/params.yaml"/>
-    <arg name="virtual_env_path"      value="$(env HOME)/virtualenv/motion_prediction_venv"/>
+    <arg name="virtual_env_path"      value="$(env HOME)/virtualenv/test_venv"/>
   </include>
 
   <node pkg="rostopic" 
diff --git a/src/node.py b/src/node.py
index 5afcb994d6f4de9bbe348a6d5d3040d72296a9ea..aa745080e6f7432fc35dcbe1c6769257e96bc289 100755
--- a/src/node.py
+++ b/src/node.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 """
 Created on Feb 17 2021