diff --git a/windows/winnet.c b/windows/winnet.c
index bcfc004d..a839dfc1 100644
--- a/windows/winnet.c
+++ b/windows/winnet.c
@@ -335,7 +335,8 @@ void sk_cleanup(void)
 	sktree = NULL;
     }
 
-    p_WSACleanup();
+    if (p_WSACleanup)
+	p_WSACleanup();
     if (winsock_module)
 	FreeLibrary(winsock_module);
 #ifndef NO_IPV6