diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index 689c533..580db82 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -213,7 +213,7 @@
     {
         mbedtls_printf( " failed\n" );
 
-        if( ( ret & MBEDTLS_BADCERT_EXPIRED ) != 0 )
+        if( ( ret & MBEDTLS_X509_BADCERT_EXPIRED ) != 0 )
             mbedtls_printf( "  ! server certificate has expired\n" );
 
         if( ( ret & MBEDTLS_X509_BADCERT_REVOKED ) != 0 )