diff --git a/Source/Core/PltUtilities.h b/Source/Core/PltUtilities.h
index d6cead73..cc4d8c03 100644
--- a/Source/Core/PltUtilities.h
+++ b/Source/Core/PltUtilities.h
@@ -706,7 +706,10 @@ class PLT_UPnPMessageHelper
         
         NPT_List<NPT_NetworkInterface*>::Iterator iface = if_list.GetFirstItem();
         while (iface) {
-            if((*iface)->IsAddressInNetwork(address)) return true;
+            if((*iface)->IsAddressInNetwork(address)) {
+                if_list.Apply(NPT_ObjectDeleter<NPT_NetworkInterface>());   
+                return true;
+            }
             ++iface;
         }