1 files changed, 3 insertions, 0 deletions
diff --git a/src/common/tortls.c b/src/common/tortls.c
index f88c99d6df..37ab9d1cc6 100644
--- a/src/common/tortls.c
+++ b/src/common/tortls.c
@@ -177,6 +177,9 @@ tor_tls_free_all(void)
 static int always_accept_verify_cb(int preverify_ok,
                                    X509_STORE_CTX *x509_ctx)
 {
+  /* avoid "unused parameter" warning. */
+  preverify_ok = 0;
+  x509_ctx = NULL;
   return 1;
 }