diff --git a/tools/chunks/catchunks/statistics-collector.hpp b/tools/chunks/catchunks/statistics-collector.hpp
index 35a0846..bc57f00 100644
--- a/tools/chunks/catchunks/statistics-collector.hpp
+++ b/tools/chunks/catchunks/statistics-collector.hpp
@@ -36,7 +36,7 @@
 class StatisticsCollector : noncopyable
 {
 public:
-  StatisticsCollector(PipelineInterestsAdaptive& pipeline, RttEstimator& rttEstimator,
+  StatisticsCollector(PipelineInterestsAdaptive& pipeline,
                       std::ostream& osCwnd, std::ostream& osRtt);
 
 private: