diff --git a/sink/sink20169.c b/sink/sink20169.c
index e04f42c..699b46d 100644
--- a/sink/sink20169.c
+++ b/sink/sink20169.c
@@ -1,6 +1,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <sys/types.h>
 
 #include <libconfig.h>