diff --git a/plugins/fluentd_telemetry_plugin/src/merge_configuration_files.py b/plugins/fluentd_telemetry_plugin/src/merge_configuration_files.py
index a696d0af..a3ff495b 100644
--- a/plugins/fluentd_telemetry_plugin/src/merge_configuration_files.py
+++ b/plugins/fluentd_telemetry_plugin/src/merge_configuration_files.py
@@ -6,10 +6,10 @@
 def merge_ini_files(old_file_path, new_file_path):
     # Check if files exist
     if not os.path.isfile(old_file_path):
-        logging.error(f"file '{old_file_path}' does not exist.")
+        logging.error(f"file %s does not exist.", old_file_path)
         sys.exit(1)
     if not os.path.isfile(new_file_path):
-        logging.error(f"file '{new_file_path}' does not exist.")
+        logging.error(f"file %s does not exist.", new_file_path)
         sys.exit(1)
 
     # Create a configparser object
@@ -22,7 +22,7 @@ def merge_ini_files(old_file_path, new_file_path):
         config_new.read(new_file_path)
 
     except configparser.Error as e:
-        logging.error(f"Failed to parse configurations files: {e}")
+        logging.error(f"Failed to parse configurations files: %s", e)
         sys.exit(1)
 
     # Merge configurations
@@ -36,10 +36,10 @@ def merge_ini_files(old_file_path, new_file_path):
                 config_old.set(section, option, config_new.get(section, option))
 
     # Write the merged configuration to the old file path
-    with open(old_file_path, 'w') as configfile:
+    with open(old_file_path, 'w', encoding="utf-8") as configfile:
         config_old.write(configfile)
 
-    logging.info(f"Configuration has been merged and saved to {old_file_path}")
+    logging.info(f"Configuration has been merged and saved to %s", old_file_path)
 
 if __name__ == "__main__":
     # Get file paths from command line arguments