diff --git a/src/comm/LinkManager.cc b/src/comm/LinkManager.cc
index 43e46a8c552451544649af01a2f0512caf10c36f..63ff231d0396eb717acbb6105813c7fd4f10b174 100644
--- a/src/comm/LinkManager.cc
+++ b/src/comm/LinkManager.cc
@@ -518,7 +518,7 @@ void LinkManager::_updateAutoConnectLinks(void)
 #endif
 
     // Iterate Comm Ports
-    for (QGCSerialPortInfo portInfo: portList) {
+    for (const QGCSerialPortInfo& portInfo: portList) {
         qCDebug(LinkManagerVerboseLog) << "-----------------------------------------------------";
         qCDebug(LinkManagerVerboseLog) << "portName:          " << portInfo.portName();
         qCDebug(LinkManagerVerboseLog) << "systemLocation:    " << portInfo.systemLocation();