diff --git a/qurator/sbb_textline_detector/main.py b/qurator/sbb_textline_detector/main.py
index 6f6c516..7f1a425 100644
--- a/qurator/sbb_textline_detector/main.py
+++ b/qurator/sbb_textline_detector/main.py
@@ -38,7 +38,7 @@ __doc__ = \
     """
 
 
-class textlineerkenner:
+class textline_detector:
     def __init__(self, image_dir, dir_out, f_name, dir_models):
         self.image_dir = image_dir  # XXX This does not seem to be a directory as the name suggests, but a file
         self.dir_out = dir_out
@@ -1475,7 +1475,7 @@ class textlineerkenner:
 def main(image, out, model):
     possibles = globals()  # XXX unused?
     possibles.update(locals())
-    x = textlineerkenner(image, out, None, model)
+    x = textline_detector(image, out, None, model)
     x.run()
 
 
diff --git a/qurator/sbb_textline_detector/ocrd_cli.py b/qurator/sbb_textline_detector/ocrd_cli.py
index d090e46..272d671 100644
--- a/qurator/sbb_textline_detector/ocrd_cli.py
+++ b/qurator/sbb_textline_detector/ocrd_cli.py
@@ -12,7 +12,7 @@ from ocrd_models.ocrd_page_generateds import MetadataItemType, LabelsType, Label
 from ocrd_utils import concat_padded, getLogger, MIMETYPE_PAGE
 from pkg_resources import resource_string
 
-from qurator.sbb_textline_detector import textlineerkenner
+from qurator.sbb_textline_detector import textline_detector
 
 log = getLogger('processor.OcrdSbbTextlineDetectorRecognize')
 
@@ -67,7 +67,7 @@ class OcrdSbbTextlineDetectorRecognize(Processor):
                 # Segment the image
                 image_file = self._resolve_image_file(input_file)
                 model = self.parameter['model']
-                x = textlineerkenner(image_file, tmp_dirname, file_id, model)
+                x = textline_detector(image_file, tmp_dirname, file_id, model)
                 x.run()
 
                 # Read segmentation results