diff --git a/tests/plugins/test_spaces_in_filename.py b/tests/plugins/test_spaces_in_filename.py
index 256fdc9f..9badce93 100644
--- a/tests/plugins/test_spaces_in_filename.py
+++ b/tests/plugins/test_spaces_in_filename.py
@@ -25,5 +25,5 @@ def test_fail(self):
         self.assertIsInstance(results[0], LinterError)
         self.assertEqual(
             results[0].message,
-            f"The VT {nasl_file} contains spaces in the filename",
+            f"The VT {nasl_file} contains whitespace in the filename",
         )
diff --git a/troubadix/plugins/spaces_in_filename.py b/troubadix/plugins/spaces_in_filename.py
index 95fd8f7c..90dbc38b 100644
--- a/troubadix/plugins/spaces_in_filename.py
+++ b/troubadix/plugins/spaces_in_filename.py
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 # SPDX-FileCopyrightText: 2024 Greenbone AG
 
+import re
 from typing import Iterator
 
 from troubadix.plugin import FilePlugin, LinterError, LinterResult
@@ -10,10 +11,10 @@ class CheckSpacesInFilename(FilePlugin):
     name = "check_spaces_in_filename"
 
     def run(self) -> Iterator[LinterResult]:
-        if " " in self.context.nasl_file.name:
+        if re.search(r"\s", self.context.nasl_file.name):
             yield LinterError(
                 f"The VT {self.context.nasl_file}"
-                " contains spaces in the filename",
+                " contains whitespace in the filename",
                 file=self.context.nasl_file,
                 plugin=self.name,
             )