diff --git a/src/helper/internet-stack-helper.h b/src/helper/internet-stack-helper.h
index ced65384e..f5a16b72e 100644
--- a/src/helper/internet-stack-helper.h
+++ b/src/helper/internet-stack-helper.h
@@ -11,6 +11,12 @@ namespace ns3 {
 class InternetStackHelper
 {
 public:
+  /**
+   * \param c the set of nodes
+   *
+   * For each node in the input container, aggregate implementations
+   * of the ns3::Ipv4, ns3::Udp, and, ns3::Tcp classes.
+   */
   void Build (NodeContainer c);
 };