diff --git a/src/replication.c b/src/replication.c
index b43e9927..871ce95a 100644
--- a/src/replication.c
+++ b/src/replication.c
@@ -3,6 +3,7 @@
 #include <sys/time.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <sys/socket.h>
 #include <sys/stat.h>
 
 /* ---------------------------------- MASTER -------------------------------- */