diff --git a/common/arch.h b/common/arch.h
index 6c61f99b..eef2552b 100644
--- a/common/arch.h
+++ b/common/arch.h
@@ -89,10 +89,16 @@ typedef __int64 tbus;
 #else
 typedef long tbus;
 #endif
-#if defined _WIN32
+#if defined(_WIN32)
 typedef unsigned short twchar;
 #else
 typedef int twchar;
 #endif
+/* socket is different in win32 */
+#if defined(_WIN32)
+typedef unsigned int tsock;
+#else
+typedef int tsock;
+#endif
 
 #endif