diff --git a/easywsclient.cpp b/easywsclient.cpp
index 0770870..0c98098 100644
--- a/easywsclient.cpp
+++ b/easywsclient.cpp
@@ -43,6 +43,7 @@
 #else
     #include <fcntl.h>
     #include <netdb.h>
+    #include <netinet/in.h>
     #include <netinet/tcp.h>
     #include <stdio.h>
     #include <stdlib.h>