diff --git a/src/pretix/plugins/banktransfer/views.py b/src/pretix/plugins/banktransfer/views.py
index baed4f1c9f..b939bb6e5b 100644
--- a/src/pretix/plugins/banktransfer/views.py
+++ b/src/pretix/plugins/banktransfer/views.py
@@ -320,6 +320,7 @@ class ImportView(ListView):
         elif 'file' in self.request.FILES and (
             '.txt' in self.request.FILES.get('file').name.lower()
             or '.sta' in self.request.FILES.get('file').name.lower()
+            or '.swi' in self.request.FILES.get('file').name.lower()  # Rabobank's MT940 Structured
         ):
             return self.process_mt940()