diff --git a/src/brite/helper/brite-topology-helper.h b/src/brite/helper/brite-topology-helper.h
index 52aa1f7c4..08a60e0f4 100644
--- a/src/brite/helper/brite-topology-helper.h
+++ b/src/brite/helper/brite-topology-helper.h
@@ -32,7 +32,7 @@
 // here we just need a forward declaration.
 namespace brite
 {
-struct Topology;
+class Topology;
 };
 
 namespace ns3