diff --git a/src/comm/LinkManager.cc b/src/comm/LinkManager.cc
index 86ec3ba1b6f91abc882d56d4407c81090b55fb04..20612542d8d993a1811295a730849f7dbe186c21 100644
--- a/src/comm/LinkManager.cc
+++ b/src/comm/LinkManager.cc
@@ -121,6 +121,8 @@ LinkInterface* LinkManager::createConnectedLink(SharedLinkConfigurationPointer&
         }
     }
         break;
+#else
+    Q_UNUSED(isPX4Flow)
 #endif
     case LinkConfiguration::TypeUdp:
         pLink = new UDPLink(config);