diff --git a/lib/tfw/components/source_code_event_handler.py b/lib/tfw/components/source_code_event_handler.py
index 4823333..46264cc 100644
--- a/lib/tfw/components/source_code_event_handler.py
+++ b/lib/tfw/components/source_code_event_handler.py
@@ -1,5 +1,7 @@
 from os.path import isfile, join, relpath, exists, isdir
 from glob import glob
+from fnmatch import fnmatchcase
+from collections import Iterable
 
 from tfw.event_handler_base import TriggerlessEventHandler
 from tfw.components.directory_monitor import DirectoryMonitor
@@ -9,8 +11,8 @@ log = logging.getLogger(__name__)
 
 
 class FileManager:
-    def __init__(self, working_directory, selected_file=None, exclude=()):
-        self._exclude, self.exclude = None, *exclude
+    def __init__(self, working_directory, selected_file=None, exclude=None):
+        self._exclude, self.exclude = None, exclude
         self._workdir, self.workdir = None, working_directory
         self._filename, self.filename = None, selected_file or self.files[0]
 
@@ -19,7 +21,9 @@ class FileManager:
         return self._exclude
 
     @exclude.setter
-    def exclude(self, *exclude):
+    def exclude(self, exclude):
+        if exclude is None: return
+        if not isinstance(exclude, Iterable): raise TypeError('Exclude must be Iterable!')
         self._exclude = exclude
 
     @property
@@ -46,7 +50,7 @@ class FileManager:
     def files(self):
         return [self._relpath(file) for file in glob(join(self._workdir, '**/*'), recursive=True)
                 if isfile(file) and
-                not any(word in file for word in self.exclude)]
+                not any(fnmatchcase(file, blacklisted) for blacklisted in self.exclude)]
 
     @property
     def file_contents(self):
diff --git a/src/demo/event_handler_main.py b/src/demo/event_handler_main.py
index 730cf18..430b93b 100644
--- a/src/demo/event_handler_main.py
+++ b/src/demo/event_handler_main.py
@@ -40,7 +40,7 @@ toggle_next.button_state = False
 
 
 if __name__ == '__main__':
-    ide = SourceCodeEventHandler(key='webide', directory=tfwenv.WEBIDE_WD, exclude=['__pycache__'])
+    ide = SourceCodeEventHandler(key='webide', directory=tfwenv.WEBIDE_WD, exclude=['*.pyc'])
     terminado = TerminadoEventHandler(key='shell')
     terminado.historymonitor.subscribe_callback(cenator)
     terminado.historymonitor.subscribe_callback(selectdir)