diff --git a/sohstationviewer/model/data_loader.py b/sohstationviewer/model/data_loader.py
index d2d5ef59abdfc135d6a6f1f0a2b0b122981be0d7..f151a07ef31a5497a99d9337dcd1feefe5763ed4 100644
--- a/sohstationviewer/model/data_loader.py
+++ b/sohstationviewer/model/data_loader.py
@@ -73,7 +73,6 @@ class DataLoaderWorker(QtCore.QObject):
             self.button_chosen.connect(data_object.receive_pause_response,
                                        type=QtCore.Qt.DirectConnection)
             data_object.__init__(
-                self.data_type, self.tracking_box,
                 self.data_type, self.tracking_box,
                 self.is_multiplex, self.list_of_dir,
                 self.list_of_rt130_paths, req_wf_chans=self.req_wf_chans,