https://issues.apache.org/activemq/browse/AMQCPP-154

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-cpp/tags/activemq-cpp-2.1.2@596777 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/test-benchmarks/benchmark/BenchmarkBase.h b/src/test-benchmarks/benchmark/BenchmarkBase.h
index 8ea7681..1e9cbd7 100644
--- a/src/test-benchmarks/benchmark/BenchmarkBase.h
+++ b/src/test-benchmarks/benchmark/BenchmarkBase.h
@@ -23,6 +23,7 @@
 #include <activemq/concurrent/Runnable.h>
 #include <benchmark/PerformanceTimer.h>
 #include <string>
+#include <iostream>
 
 namespace benchmark{