diff --git a/src/raspberrypi/controllers/sasidev_ctrl.cpp b/src/raspberrypi/controllers/sasidev_ctrl.cpp
index cb445a67..89276f0d 100644
--- a/src/raspberrypi/controllers/sasidev_ctrl.cpp
+++ b/src/raspberrypi/controllers/sasidev_ctrl.cpp
@@ -356,7 +356,7 @@ void SASIDEV::Execute()
 	ctrl.execstart = SysTimer::GetTimerLow();
 
 	// Discard pending sense data from the previous command if the current command is not REQUEST SENSE
-	if(SASIDEV::eCmdRequestSense != (SASIDEV::sasi_command)ctrl.cmd[0]) {
+	if ((SASIDEV::sasi_command)ctrl.cmd[0] != SASIDEV::eCmdRequestSense) {
 		ctrl.status = 0;
 		ctrl.device->SetStatusCode(0);
 	}
diff --git a/src/raspberrypi/controllers/scsidev_ctrl.cpp b/src/raspberrypi/controllers/scsidev_ctrl.cpp
index 59a2e06b..c07d35b6 100644
--- a/src/raspberrypi/controllers/scsidev_ctrl.cpp
+++ b/src/raspberrypi/controllers/scsidev_ctrl.cpp
@@ -262,7 +262,7 @@ void SCSIDEV::Execute()
 
 	ctrl.device = ctrl.unit[lun];
 
-	// Discard pending sense data from the previous command
+	// Discard pending sense data from the previous command if the current command is not REQUEST SENSE
 	if ((SCSIDEV::scsi_command)ctrl.cmd[0] != eCmdRequestSense) {
 		ctrl.device->SetStatusCode(0);
 	}
diff --git a/src/raspberrypi/rascsi.cpp b/src/raspberrypi/rascsi.cpp
index 4381fccf..29a10757 100644
--- a/src/raspberrypi/rascsi.cpp
+++ b/src/raspberrypi/rascsi.cpp
@@ -959,6 +959,11 @@ bool ProcessCmd(int fd, const PbDeviceDefinition& pb_device, const PbCommand& co
 			assert(dryRun);
 			break;
 
+		case NONE:
+			// Do nothing, just log
+			LOGTRACE("Received %s command", PbOperation_Name(operation).c_str());
+			break;
+
 		default:
 			return ReturnStatus(fd, false, "Unknown operation");
 	}