diff --git a/lib/socket_compat.h b/lib/socket_compat.h
index d9fb6eae..8288aa3d 100644
--- a/lib/socket_compat.h
+++ b/lib/socket_compat.h
@@ -5,6 +5,7 @@
 
 #ifndef SOCKET_COMPAT_H
 #define SOCKET_COMPAT_H
+#include <stdint.h>
 
 #ifdef _WIN32
     #include <winsock2.h>