diff --git a/helper/ndn-link-control-helper.cpp b/helper/ndn-link-control-helper.cpp
index 70a3171..26a2a2c 100644
--- a/helper/ndn-link-control-helper.cpp
+++ b/helper/ndn-link-control-helper.cpp
@@ -57,7 +57,7 @@
 
   // iterate over all faces to find the right one
   for (const auto& face : ndn1->getForwarder()->getFaceTable()) {
-    auto linkService = dynamic_cast<NetDeviceLinkService*>(face->getLinkService());
+    auto linkService = dynamic_cast<NetDeviceLinkService*>(face.getLinkService());
     if (linkService == nullptr)
       continue;