diff --git a/ohmpi/hardware_components/mb_2024_0_2.py b/ohmpi/hardware_components/mb_2024_0_2.py
index 5c2b0795347b9367c5552d05cadd610f9cb006aa..15e2483673daee948676352c8b4a55bf4e76993b 100644
--- a/ohmpi/hardware_components/mb_2024_0_2.py
+++ b/ohmpi/hardware_components/mb_2024_0_2.py
@@ -80,6 +80,7 @@ class Tx(Tx_mb_2023):
         Tx_mb_2023.inject(self, polarity=polarity, injection_duration=injection_duration)
         self.pin6.value = False
 
+    @property
     def polarity(self):
         return self._polarity