diff --git a/config-win32.h b/config-win32.h
index d90d21dc7086ebaf11e7312188d185393bbdad40..28c461ef94e66313440dccf002eff2b9fc7c8f99 100644
--- a/config-win32.h
+++ b/config-win32.h
@@ -26,6 +26,9 @@
 /* Define this to 'int' if ssize_t is not an available typedefed type */
 #define ssize_t int
 
+/* Define this to 'int' if socklen_t is not an available typedefed type */
+#define socklen_t int
+
 /* Define if you have the ANSI C header files.  */
 #define STDC_HEADERS 1