diff --git a/tests/libtest/lib1545.c b/tests/libtest/lib1545.c
index 9278b2a5cb..f31baa0c4d 100644
--- a/tests/libtest/lib1545.c
+++ b/tests/libtest/lib1545.c
@@ -21,6 +21,9 @@
  * SPDX-License-Identifier: curl
  *
  ***************************************************************************/
+#ifndef CURL_DISABLE_DEPRECATION
+#define CURL_DISABLE_DEPRECATION  /* Using and testing the form api */
+#endif
 #include "test.h"
 
 int test(char *URL)