diff --git a/backup-docker-to-local.py b/backup-docker-to-local.py
index 72dbd2f..6ed2d9f 100644
--- a/backup-docker-to-local.py
+++ b/backup-docker-to-local.py
@@ -155,7 +155,7 @@ def main():
     
     for volume_name in volume_names:
         print(f'Start backup routine for volume: {volume_name}')
-        containers = execute_shell_command(f"docker ps --filter volume=\"{volume_name}\" --format '{{.Names}}'")
+        containers = execute_shell_command(f"docker ps --filter volume=\"{volume_name}\" --format '{{{{.Names}}}}'")
         if not containers:
             print('Skipped due to no running containers using this volume.')
             continue