diff --git a/src/comm/SerialLink.cc b/src/comm/SerialLink.cc
index f9b56249e2b6e6abb6ae36781951441f97bd4020..819bbcb20b395a178799f885c96140ace3a0cb2c 100644
--- a/src/comm/SerialLink.cc
+++ b/src/comm/SerialLink.cc
@@ -405,7 +405,7 @@ SerialConfiguration::SerialConfiguration(SerialConfiguration* copy) : LinkConfig
 void SerialConfiguration::copyFrom(LinkConfiguration *source)
 {
     LinkConfiguration::copyFrom(source);
-    SerialConfiguration* ssource = dynamic_cast<SerialConfiguration*>(source);
+    auto* ssource = qobject_cast<SerialConfiguration*>(source);
     if (ssource) {
         _baud               = ssource->baud();
         _flowControl        = ssource->flowControl();
@@ -423,7 +423,7 @@ void SerialConfiguration::copyFrom(LinkConfiguration *source)
 void SerialConfiguration::updateSettings()
 {
     if(_link) {
-        SerialLink* serialLink = dynamic_cast<SerialLink*>(_link);
+        auto* serialLink = qobject_cast<SerialLink*>(_link);
         if(serialLink) {
             serialLink->_resetConfiguration();
         }