--- xmlsec1-1.2.33/src/openssl/app.c	2022-01-28 07:47:11.922603482 +0100
+++ xmlsec1-1.2.33/src/openssl/app.c	2022-01-28 08:18:12.786240295 +0100
@@ -437,7 +437,7 @@
         }
     }
 
-    if(ENGINE_ctrl_cmd(engine, "SET_USER_INTERFACE", 0, (void *)UI_null(), 0, 1) < 0) {
+    if(ENGINE_ctrl_cmd(engine, "SET_USER_INTERFACE", 0, (void *)0, 0, 1) < 0) {
         xmlSecOpenSSLError("ENGINE_ctrl_cmd_string(SET_USER_INTERFACE)", NULL);
         goto done;
     }
@@ -453,7 +453,7 @@
 
     /* load private key */
     pKey = ENGINE_load_private_key(engine, engineKeyId,
-                                   (UI_METHOD *)UI_null(),
+                                   (UI_METHOD *)0,
                                    NULL);
     if(pKey == NULL) {
         xmlSecOpenSSLError("ENGINE_load_private_key", NULL);