diff --git a/src/cqedtoolbox/instruments/qcodes_drivers/DMT/DMTCurrentSource.py b/src/cqedtoolbox/instruments/qcodes_drivers/DMT/DMTCurrentSource.py
index e469844..0350b67 100644
--- a/src/cqedtoolbox/instruments/qcodes_drivers/DMT/DMTCurrentSource.py
+++ b/src/cqedtoolbox/instruments/qcodes_drivers/DMT/DMTCurrentSource.py
@@ -157,9 +157,9 @@ def _open_resource( #local visa open resource that sets the baud rate
         self, address: str, visalib: str | None
         ) -> tuple[pyvisa.resources.MessageBasedResource, str, pyvisa.ResourceManager]:
 
-        resource, visabackend, resource_manager = super()._open_resource(address, visalib)
+        resource = super()._open_resource(address, visalib)
         resource.baud_rate = 115200
-        return resource, visabackend, resource_manager
+        return resource
     
     def get_temp(self):
         temp_response = self.ask("!tmp")