diff --git a/lib/plat/windows/windows-sockets.c b/lib/plat/windows/windows-sockets.c
index b0e15dd1e..ba0de92cb 100644
--- a/lib/plat/windows/windows-sockets.c
+++ b/lib/plat/windows/windows-sockets.c
@@ -569,7 +569,7 @@ lws_plat_mbedtls_net_send(void *ctx, const uint8_t *buf, size_t len)
 		return ret;
 
 	en = LWS_ERRNO;
-	if (en == EAGAIN || en == EWOULDBLOCK)
+	if (en == EAGAIN || en == EWOULDBLOCK || en == WSAEWOULDBLOCK)
 		return MBEDTLS_ERR_SSL_WANT_WRITE;
 
 	ret = WSAGetLastError();
@@ -594,7 +594,7 @@ lws_plat_mbedtls_net_recv(void *ctx, unsigned char *buf, size_t len)
 		return ret;
 
 	en = LWS_ERRNO;
-	if (en == EAGAIN || en == EWOULDBLOCK)
+	if (en == EAGAIN || en == EWOULDBLOCK || en == WSAEWOULDBLOCK)
 		return MBEDTLS_ERR_SSL_WANT_READ;
 
 	ret = WSAGetLastError();