diff --git a/library/xtea.c b/library/xtea.c
index 65b4165..a33707b 100644
--- a/library/xtea.c
+++ b/library/xtea.c
@@ -28,7 +28,7 @@
 #if defined(MBEDTLS_XTEA_C)
 
 #include "mbedtls/xtea.h"
-#include "mbedtls/utils.h"
+#include "mbedtls/platform_util.h"
 
 #include <string.h>
 
@@ -76,7 +76,7 @@
     if( ctx == NULL )
         return;
 
-    mbedtls_zeroize( ctx, sizeof( mbedtls_xtea_context ) );
+    mbedtls_platform_zeroize( ctx, sizeof( mbedtls_xtea_context ) );
 }
 
 /*