diff --git a/lib/vtls/mbedtls.c b/lib/vtls/mbedtls.c
index c96219711a..64f57c5d83 100644
--- a/lib/vtls/mbedtls.c
+++ b/lib/vtls/mbedtls.c
@@ -82,7 +82,6 @@ struct ssl_backend_data {
   mbedtls_ctr_drbg_context ctr_drbg;
   mbedtls_entropy_context entropy;
   mbedtls_ssl_context ssl;
-  int server_fd;
   mbedtls_x509_crt cacert;
   mbedtls_x509_crt clicert;
 #ifdef MBEDTLS_X509_CRL_PARSE_C