diff --git a/lib/base/threadpool.cpp b/lib/base/threadpool.cpp
index e110f0b29..9bad24050 100644
--- a/lib/base/threadpool.cpp
+++ b/lib/base/threadpool.cpp
@@ -26,7 +26,6 @@
 #include <boost/bind.hpp>
 #include <boost/exception/diagnostic_information.hpp>
 #include <boost/foreach.hpp>
-#include <boost/chrono/duration.hpp>
 
 using namespace icinga;