diff --git a/remote_command_execution_vulnerability.py b/remote_command_execution_vulnerability.py
index 0f3c638..f41b89c 100644
--- a/remote_command_execution_vulnerability.py
+++ b/remote_command_execution_vulnerability.py
@@ -38,11 +38,11 @@
 
 # make config file
 speed_test_filename = "speedtest_urls.xml"
-with open("speedtest_urls_template.xml", "rt") as f:
+with open("speedtest_urls_template.xml", "rt", encoding = "UTF-8") as f:
     template = f.read()
 data = template.format(router_ip_address=router_ip_address, command=command)
 # print(data)
-with open("build/speedtest_urls.xml", 'wt') as f:
+with open("build/speedtest_urls.xml", "wt", encoding = "UTF-8") as f:
     f.write(data)
 
 print("****************")