diff --git a/lib/server.c b/lib/server.c
index a0194c46..8bd68487 100644
--- a/lib/server.c
+++ b/lib/server.c
@@ -233,6 +233,9 @@ int lws_http_serve(struct lws *wsi, char *uri, const char *origin)
 	char path[256], sym[256];
 	unsigned char *p = (unsigned char *)sym + 32 + LWS_PRE, *start = p;
 	unsigned char *end = p + sizeof(sym) - 32 - LWS_PRE;
+#if !defined(WIN32)
+	size len;
+#endif
 	int n, spin = 0;
 
 	snprintf(path, sizeof(path) - 1, "%s/%s", origin, uri);