diff --git a/examples/aodv.cc b/examples/aodv.cc
index a785cd64b..ee2f2319f 100644
--- a/examples/aodv.cc
+++ b/examples/aodv.cc
@@ -58,7 +58,7 @@ private:
   ///\name parameters
   //\{
   /// Number of nodes
-  uint8_t size; 
+  uint32_t size; 
   /// Distance between nodes, meters
   double step;
   /// Simulation time, seconds