diff --git a/lib/vtls/rustls.c b/lib/vtls/rustls.c
index ca318d5f4e..7071df88d9 100644
--- a/lib/vtls/rustls.c
+++ b/lib/vtls/rustls.c
@@ -43,6 +43,10 @@
 #include "cipher_suite.h"
 #include "x509asn1.h"
 
+/* The last #include files should be: */
+#include "../curl_memory.h"
+#include "../memdebug.h"
+
 struct rustls_ssl_backend_data
 {
   const struct rustls_client_config *config;