diff --git a/zfs-backup.py b/zfs-backup.py
index 9b69d42..6ed3584 100755
--- a/zfs-backup.py
+++ b/zfs-backup.py
@@ -32,7 +32,7 @@ MAPPER_PATH = Path("/dev/mapper")
 
 
 def main():
-    verify_running_as_root()
+    _verify_running_as_root()
     local_pool = Pool(config.local_pool_to_backup)
     external_pool = ExternalPool.find_from_dict(config.backup_pools)
     manager = Manager(local_pool, external_pool)
@@ -730,7 +730,7 @@ class CommandRunner:
         return Popen(cmdline, stdout=PIPE)
 
 
-def verify_running_as_root():
+def _verify_running_as_root():
     if getuid() > 0:
         print(RUN_AS_ROOT)
         exit(EXIT_ERROR)