diff --git a/src/libsodium/sodium/utils.c b/src/libsodium/sodium/utils.c
index bb94fe88..2c6d7cdb 100644
--- a/src/libsodium/sodium/utils.c
+++ b/src/libsodium/sodium/utils.c
@@ -92,6 +92,9 @@ sodium_memzero(void *const pnt, const size_t len)
 #elif HAVE_WEAK_SYMBOLS
     memset(pnt, 0, len);
     _sodium_dummy_symbol_to_prevent_memzero_lto(pnt, len);
+# ifdef HAVE_AMD64_ASM
+    __asm__ __volatile__ ("" : : "p"(pnt));
+# endif
 #else
     volatile unsigned char *volatile pnt_ =
         (volatile unsigned char *volatile) pnt;