diff --git a/csaxs_bec/devices/omny/galil/galil_rio.py b/csaxs_bec/devices/omny/galil/galil_rio.py
index 9b50d02..cf8a8bd 100644
--- a/csaxs_bec/devices/omny/galil/galil_rio.py
+++ b/csaxs_bec/devices/omny/galil/galil_rio.py
@@ -163,7 +163,7 @@ class GalilRIO(PSIDeviceBase):
         logger.info(f"Reading Galil RIO channels with command: {cmd}")
         ret = self.controller.socket_put_and_receive(cmd)
         timestamp = time.time()
-        values = [float(val) for val in ret.strip().split(" ")]
+        values = [float(val) for val in ret.strip().strip("?").split(" ")]
         for val, (_, signal_name) in zip(values, channels):
             res[signal_name] = {"value": val, "timestamp": timestamp}
         return res