diff --git a/src/facturx/__init__.py b/src/facturx/__init__.py
index 00752dd..fbfefcb 100644
--- a/src/facturx/__init__.py
+++ b/src/facturx/__init__.py
@@ -1,4 +1,5 @@
-__version__ = "4.2"
+import logging
+
 from .facturx import (
     generate_from_binary,
     generate_from_file,
@@ -14,6 +15,8 @@
     xml_check_xsd,
 )
 
+__version__ = "4.2"
+
 __all__ = [
     "generate_from_binary",
     "generate_from_file",
@@ -28,3 +31,15 @@
     "xml_check_schematron",
     "xml_check_xsd",
 ]
+
+logging.getLogger("factur-x").addHandler(logging.NullHandler())
+
+
+def configure_script_logging(level=logging.INFO):
+    logger = logging.getLogger("factur-x")
+    handler = logging.StreamHandler()
+    handler.setFormatter(logging.Formatter(
+        "%(asctime)s [%(levelname)s] %(message)s"
+    ))
+    logger.addHandler(handler)
+    logger.setLevel(level)
diff --git a/src/facturx/facturx.py b/src/facturx/facturx.py
index c69809e..90b816a 100644
--- a/src/facturx/facturx.py
+++ b/src/facturx/facturx.py
@@ -55,12 +55,9 @@
 import mimetypes
 import os.path
 
-VERSION = importlib.metadata.version("factur-x")
-FORMAT = "%(asctime)s [%(levelname)s] %(message)s"
-logging.basicConfig(format=FORMAT)
 logger = logging.getLogger("factur-x")
-logger.setLevel(logging.INFO)
 
+VERSION = importlib.metadata.version("factur-x")
 FACTURX_FILENAME = "factur-x.xml"
 ZUGFERD_FILENAMES = ["zugferd-invoice.xml", "ZUGFeRD-invoice.xml"]
 ORDERX_FILENAME = "order-x.xml"
diff --git a/src/facturx/scripts/pdfextractxml.py b/src/facturx/scripts/pdfextractxml.py
index cd731c4..8b9c9ab 100755
--- a/src/facturx/scripts/pdfextractxml.py
+++ b/src/facturx/scripts/pdfextractxml.py
@@ -8,34 +8,19 @@
 
 from facturx import __version__ as fxversion
 from facturx import get_xml_from_pdf
-from facturx.facturx import logger
+from facturx import configure_script_logging
 
 __author__ = "Alexis de Lattre <alexis.delattre@akretion.com>"
 __date__ = "March 2026"
 __version__ = "0.4"
 
+logger = logging.getLogger("factur-x")
+
 
 def pdfextractxml(args):
     logger.info(
         "pdfextractxml version %s using factur-x lib version %s", __version__, fxversion
     )
-    if args.log_level:
-        log_level = args.log_level.lower()
-        log_map = {
-            "debug": logging.DEBUG,
-            "info": logging.INFO,
-            "warn": logging.WARN,
-            "error": logging.ERROR,
-        }
-        if log_level in log_map:
-            logger.setLevel(log_map[log_level])
-        else:
-            logger.error(
-                "Wrong value for log level (%s). Possible values: %s",
-                log_level,
-                ", ".join(log_map.keys()),
-            )
-            sys.exit(1)
 
     pdf_filename = args.facturx_orderx_file
     out_xml_filename = args.xml_file_to_create
@@ -88,6 +73,7 @@ def main(args=None):
         default="info",
         help="Set log level. Possible values: debug, info, warn, error. "
         "Default value: info.",
+        choices=["debug", "info", "warn", "error"],
     )
     parser.add_argument(
         "-d",
@@ -111,6 +97,13 @@ def main(args=None):
         help="Filename of the XML file that will be extracted from the PDF",
     )
     args = parser.parse_args()
+    log_map = {
+        "debug": logging.DEBUG,
+        "info": logging.INFO,
+        "warn": logging.WARN,
+        "error": logging.ERROR,
+    }
+    configure_script_logging(level=log_map[args.log_level])
     pdfextractxml(args)
 
 
diff --git a/src/facturx/scripts/pdfgen.py b/src/facturx/scripts/pdfgen.py
index 2f849fd..776db9d 100755
--- a/src/facturx/scripts/pdfgen.py
+++ b/src/facturx/scripts/pdfgen.py
@@ -8,34 +8,19 @@
 
 from facturx import __version__ as fxversion
 from facturx import generate_from_file
-from facturx.facturx import logger
+from facturx import configure_script_logging
 
 __author__ = "Alexis de Lattre <alexis.delattre@akretion.com>"
 __date__ = "October 2025"
 __version__ = "0.9"
 
+logger = logging.getLogger("factur-x")
+
 
 def pdfgen(args):
     logger.info(
         "pdfgen version %s using factur-x lib version %s", __version__, fxversion
     )
-    if args.log_level:
-        log_level = args.log_level.lower()
-        log_map = {
-            "debug": logging.DEBUG,
-            "info": logging.INFO,
-            "warn": logging.WARN,
-            "error": logging.ERROR,
-        }
-        if log_level in log_map:
-            logger.setLevel(log_map[log_level])
-        else:
-            logger.error(
-                "Wrong value for log level (%s). Possible values: %s",
-                log_level,
-                ", ".join(log_map.keys()),
-            )
-            sys.exit(1)
 
     pdf_filename = args.regular_pdf_file
     output_pdf_filename = args.facturx_orderx_pdf_file
@@ -128,6 +113,7 @@ def main(args=None):
         default="info",
         help="Set log level. Possible values: debug, info, warn, error. "
         "Default value: info.",
+        choices=["debug", "info", "warn", "error"],
     )
     parser.add_argument(
         "-d",
@@ -257,6 +243,13 @@ def main(args=None):
         help="Optional list of additionnal attachments",
     )
     args = parser.parse_args()
+    log_map = {
+        "debug": logging.DEBUG,
+        "info": logging.INFO,
+        "warn": logging.WARN,
+        "error": logging.ERROR,
+    }
+    configure_script_logging(level=log_map[args.log_level])
     pdfgen(args)
 
 
diff --git a/src/facturx/scripts/webservice.py b/src/facturx/scripts/webservice.py
index dac7b4e..5018d00 100755
--- a/src/facturx/scripts/webservice.py
+++ b/src/facturx/scripts/webservice.py
@@ -24,7 +24,7 @@
 
 from facturx import __version__ as fxversion
 from facturx import generate_from_file
-from facturx.facturx import logger as fxlogger
+from facturx import configure_script_logging
 
 MAX_ATTACHMENTS = 3  # TODO make it a cmd line option
 __author__ = "Alexis de Lattre <alexis.delattre@akretion.com>"
@@ -32,6 +32,8 @@
 __version__ = "0.2"
 app = Flask(__name__)
 
+logger = logging.getLogger('factur-x')
+
 
 @app.route("/generate_facturx", methods=["POST"])
 def generate_facturx():
@@ -125,28 +127,29 @@ def main(args=None):
         default="info",
         help="Log level. Possible values: critical, error, warning, "
         "info (default), debug.",
+        choices=["critical", "error", "warning", "info", "debug"],
     )
     args = parser.parse_args()
+    log_map = {
+        "debug": logging.DEBUG,
+        "info": logging.INFO,
+        "warning": logging.WARN,
+        "error": logging.ERROR,
+        "critical": logging.CRITICAL,
+    }
+    level = log_map[args.loglevel]
     if args.logfile:
         formatter = logging.Formatter("[%(asctime)s] %(levelname)s %(message)s")
         handler = RotatingFileHandler(args.logfile)
-        if args.loglevel == "debug":
-            level = logging.DEBUG
-        elif args.loglevel == "critical":
-            level = logging.CRITICAL
-        elif args.loglevel == "warning":
-            level = logging.WARNING
-        elif args.loglevel == "error":
-            level = logging.ERROR
-        else:
-            level = logging.INFO
         handler.setLevel(level)
         handler.setFormatter(formatter)
-        fxlogger.setLevel(level)
-        fxlogger.addHandler(handler)
+        logger.setLevel(level)
+        logger.addHandler(handler)
         app.logger.addHandler(handler)
         app.logger.info("Start webservice to generate Factur-X invoices")
-    fxlogger.info(
+    else:
+        configure_script_logging(level=level)
+    logger.info(
         "webservice version %s using factur-x lib version %s", __version__, fxversion
     )
     app.run(debug=args.debug, port=args.port, host=args.host)
diff --git a/src/facturx/scripts/xmlcheck.py b/src/facturx/scripts/xmlcheck.py
index c673dc9..0522884 100755
--- a/src/facturx/scripts/xmlcheck.py
+++ b/src/facturx/scripts/xmlcheck.py
@@ -8,34 +8,20 @@
 
 from facturx import __version__ as fxversion
 from facturx import xml_check_schematron, xml_check_xsd
-from facturx.facturx import logger
+from facturx import configure_script_logging
 
 __author__ = "Alexis de Lattre <alexis.delattre@akretion.com>"
 __date__ = "March 2026"
 __version__ = "0.5"
 
 
+logger = logging.getLogger("factur-x")
+
+
 def xmlcheck(args):
     logger.info(
         "xmlcheck version %s using factur-x lib version %s", __version__, fxversion
     )
-    if args.log_level:
-        log_level = args.log_level.lower()
-        log_map = {
-            "debug": logging.DEBUG,
-            "info": logging.INFO,
-            "warn": logging.WARN,
-            "error": logging.ERROR,
-        }
-        if log_level in log_map:
-            logger.setLevel(log_map[log_level])
-        else:
-            logger.error(
-                "Wrong value for log level (%s). Possible values: %s",
-                log_level,
-                ", ".join(log_map.keys()),
-            )
-            sys.exit(1)
 
     if not isfile(args.xml_file):
         logger.error("%s is not a filename", args.xml_file)
@@ -73,6 +59,7 @@ def main(args=None):
         default="info",
         help="Set log level. Possible values: debug, info, warn, error. "
         "Default value: info.",
+        choices=["debug", "info", "warn", "error"],
     )
     parser.add_argument(
         "-f",
@@ -98,6 +85,13 @@ def main(args=None):
     )
     parser.add_argument("xml_file", help="Factur-X or Order-X XML file to check")
     args = parser.parse_args()
+    log_map = {
+        "debug": logging.DEBUG,
+        "info": logging.INFO,
+        "warn": logging.WARN,
+        "error": logging.ERROR,
+    }
+    configure_script_logging(level=log_map[args.log_level])
     xmlcheck(args)