diff --git a/contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp b/contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp
index 613e5af..f10fe3c 100644
--- a/contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp
+++ b/contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp
@@ -2,6 +2,7 @@
 #include <sys/types.h>
 #include <sys/event.h>
 
+#include <iostream>
 #include <cstring>
 #include <errno.h>