diff --git a/example/sum_avg.cpp b/example/sum_avg.cpp
index 204ac8f..413ac75 100644
--- a/example/sum_avg.cpp
+++ b/example/sum_avg.cpp
@@ -27,7 +27,9 @@ void do_sum_avg(int values[], int n, int& sum, float& avg)
 int
 main()
 {
-  boost::function<void, int[], int, int&, float&> sum_avg;
+  // The second parameter should be int[], but some compilers (e.g., GCC)
+  // complain about this 
+  boost::function<void, int*, int, int&, float&> sum_avg;
 
   sum_avg = &do_sum_avg;