diff --git a/TODO.md b/TODO.md
index 78f009d..e69de29 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1 +0,0 @@
-* wtforms locale
diff --git a/prolefeeder.py b/prolefeeder.py
index f5c78b0..9f83526 100644
--- a/prolefeeder.py
+++ b/prolefeeder.py
@@ -17,12 +17,16 @@ from config import Config
 
 app = Flask(__name__)
 app.config.from_object(Config)
+app.config['WTF_I18N_ENABLED'] = False  # enables WTForms built-in translations
 Bootstrap(app)
 
 attachment_filenames = {}
 
 
 class DownloadForm(FlaskForm):
+    class Meta:
+        locales = ['de_DE', 'de']
+
     start_time = DateTimeField('Startzeit',
                                validators=[InputRequired()],
                                format='%d.%m.%Y %H:%M')
diff --git a/requirements.txt b/requirements.txt
index 0fcfc29..6f574de 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,6 @@
 flask
 flask-bootstrap
-flask-wtf
 python-dotenv
+
+# flask-wtf 0.14.2 is broken (enabling WTForms built-in translations does not work):
+git+https://github.com/lepture/flask-wtf.git@534e1734b86c2f0907af131c11b981e6146ca57c