diff --git a/ext/project.h b/ext/project.h
index 318f66488..a1aa4715d 100644
--- a/ext/project.h
+++ b/ext/project.h
@@ -82,7 +82,7 @@ typedef int SOCKET;
 
 #ifdef OS_WIN32
 // 21Sep09: windows limits select() to 64 sockets by default, we increase here (before including winsock2.h)
-#define FD_SETSIZE 2048
+#define FD_SETSIZE 32767
 
 #define WIN32_LEAN_AND_MEAN
 // Add support for IPv6