diff --git a/tests/server/testpart.c b/tests/server/testpart.c
index f3a70c7cf..79869e21c 100644
--- a/tests/server/testpart.c
+++ b/tests/server/testpart.c
@@ -23,8 +23,7 @@
 
 #include "getpart.h"
 
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
+#include "curl_printf.h"
 
 /* include memdebug.h last */
 #include "memdebug.h"