diff --git a/ohmpi/hardware_system.py b/ohmpi/hardware_system.py
index c24d76852ecf5326ea46da7937b5199465e2c6b3..129c6e9c1206f538033401907a7f69f66b4c39a6 100644
--- a/ohmpi/hardware_system.py
+++ b/ohmpi/hardware_system.py
@@ -644,6 +644,7 @@ class OhmPiHardware:
         if self.tx.pwr.voltage_adjustable:
             if self.tx.voltage != vab:
                 self.tx.voltage = vab
+            if self.tx.current != 0.02:
                 self.tx.current = 0.02
         else:
             vab = self.tx.voltage