diff --git a/lib/vtls/wolfssl.c b/lib/vtls/wolfssl.c
index b1384a644b..135ba697ed 100644
--- a/lib/vtls/wolfssl.c
+++ b/lib/vtls/wolfssl.c
@@ -513,7 +513,7 @@ wolfssl_connect_step1(struct Curl_cfilter *cf, struct Curl_easy *data)
     }
   }
 
-#ifndef NO_FILESYSTEM
+#if !defined(NO_FILESYSTEM) && defined(WOLFSSL_SYS_CA_CERTS)
   /* load native CA certificates */
   if(ssl_config->native_ca_store) {
     if(wolfSSL_CTX_load_system_CA_certs(backend->ctx) != WOLFSSL_SUCCESS) {