diff --git a/src/edge_utils_win32.c b/src/edge_utils_win32.c
index 786968e..b65c44c 100644
--- a/src/edge_utils_win32.c
+++ b/src/edge_utils_win32.c
@@ -18,6 +18,8 @@
 
 #ifdef WIN32
 
+#include <winsock2.h>
+
 #include "edge_utils_win32.h"
 
 /* ************************************** */