diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 3064b52..09645cd 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -6050,7 +6050,7 @@
         have_ca_chain = 1;
 
         MBEDTLS_SSL_DEBUG_MSG( 3, ( "use CA callback for X.509 CRT verification" ) );
-        ret = mbedtls_x509_crt_verify_with_cb(
+        ret = mbedtls_x509_crt_verify_with_ca_cb(
             chain,
             ssl->conf->f_ca_cb,
             ssl->conf->p_ca_cb,