diff --git a/src/comm/MockLink.cc b/src/comm/MockLink.cc
index c5dfffd891fc618ffceff15f7cf31eb4c33d6d84..cc2a5070c6fddea9efc8d60a7b61ce06670c762d 100644
--- a/src/comm/MockLink.cc
+++ b/src/comm/MockLink.cc
@@ -1134,7 +1134,7 @@ MockConfiguration::MockConfiguration(MockConfiguration* source)
 void MockConfiguration::copyFrom(LinkConfiguration *source)
 {
     LinkConfiguration::copyFrom(source);
-    MockConfiguration* usource = dynamic_cast<MockConfiguration*>(source);
+    auto* usource = qobject_cast<MockConfiguration*>(source);
 
     if (!usource) {
         qWarning() << "dynamic_cast failed" << source << usource;