diff --git a/nc_py_api/ex_app/logging.py b/nc_py_api/ex_app/logging.py
index cd245767..b0056658 100644
--- a/nc_py_api/ex_app/logging.py
+++ b/nc_py_api/ex_app/logging.py
@@ -1,6 +1,7 @@
 """Transparent logging support to store logs in the nextcloud.log."""
 
 import logging
+import threading
 
 from ..nextcloud import NextcloudApp
 from .defs import LogLvl
@@ -18,30 +19,29 @@ def _python_loglvl_to_nextcloud(levelno: int) -> LogLvl:
     return LogLvl.FATAL
 
 
-class _NextcloudStorageHandler(logging.Handler):
+class _NextcloudLogsHandler(logging.Handler):
     def __init__(self):
         super().__init__()
-        self.lock_flag = False
 
     def emit(self, record):
-        if self.lock_flag:
+        if threading.local().__dict__.get("nc_py_api.loghandler", False):
             return
 
         try:
-            self.lock_flag = True
+            threading.local().__dict__["nc_py_api.loghandler"] = True
             log_entry = self.format(record)
             log_level = record.levelno
             NextcloudApp().log(_python_loglvl_to_nextcloud(log_level), log_entry, fast_send=True)
         except Exception:  # noqa pylint: disable=broad-exception-caught
             self.handleError(record)
         finally:
-            self.lock_flag = False
+            threading.local().__dict__["nc_py_api.loghandler"] = False
 
 
 def setup_nextcloud_logging(logger_name: str | None = None, logging_level: int = logging.DEBUG):
     """Function to easily send all or selected log entries to Nextcloud."""
     logger = logging.getLogger(logger_name)
-    nextcloud_handler = _NextcloudStorageHandler()
+    nextcloud_handler = _NextcloudLogsHandler()
     nextcloud_handler.setLevel(logging_level)
     logger.addHandler(nextcloud_handler)
     return nextcloud_handler