diff --git a/qemu-option.c b/qemu-option.c
index acd74f9..f884865 100644
--- a/qemu-option.c
+++ b/qemu-option.c
@@ -378,6 +378,7 @@ QEMUOptionParameter
*append_option_parameters(QEMUOptionParameter *dest,
     num_options += count_option_parameters(list);

     dest = qemu_realloc(dest, (num_options + 1) *
sizeof(QEMUOptionParameter));
+    dest[num_dest_options].name = NULL;