diff --git a/Transceiver/DXLabSuiteCommanderTransceiver.cpp b/Transceiver/DXLabSuiteCommanderTransceiver.cpp
index 8f2063c7e..2014c1044 100644
--- a/Transceiver/DXLabSuiteCommanderTransceiver.cpp
+++ b/Transceiver/DXLabSuiteCommanderTransceiver.cpp
@@ -385,7 +385,7 @@ auto DXLabSuiteCommanderTransceiver::get_mode () -> MODE
 
 void DXLabSuiteCommanderTransceiver::simple_command (QString const& cmd)
 {
-  Q_ASSERT (commander_);
+  if (!commander_) return;
 
   CAT_TRACE (cmd);
 
@@ -398,7 +398,7 @@ void DXLabSuiteCommanderTransceiver::simple_command (QString const& cmd)
 
 QString DXLabSuiteCommanderTransceiver::command_with_reply (QString const& cmd)
 {
-  Q_ASSERT (commander_);
+  if (!commander_) return QString {};
 
   if (!write_to_port (cmd))
     {
diff --git a/Transceiver/HRDTransceiver.cpp b/Transceiver/HRDTransceiver.cpp
index f9c148a3b..54abd8081 100644
--- a/Transceiver/HRDTransceiver.cpp
+++ b/Transceiver/HRDTransceiver.cpp
@@ -1005,7 +1005,7 @@ void HRDTransceiver::do_poll ()
 
 QString HRDTransceiver::send_command (QString const& cmd, bool prepend_context, bool recurse)
 {
-  Q_ASSERT (hrd_);
+  if (!hrd_) return QString {};
 
   QString result;