diff --git a/contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp b/contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp
index 4a0f554..613e5af 100644
--- a/contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp
+++ b/contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp
@@ -3,6 +3,7 @@
 #include <sys/event.h>
 
 #include <cstring>
+#include <errno.h>
 
 namespace nntpchan 
 {