diff --git a/ekc3/ekc3.c b/ekc3/ekc3.c
index 918846c..7fe8607 100644
--- a/ekc3/ekc3.c
+++ b/ekc3/ekc3.c
@@ -560,6 +560,9 @@ sw ekc3_render_raw_block_size (s_pretty *pretty, const s_block *block)
case TAG_STR:
r = buf_write_str_size(pretty, &result.data.str);
break;
+ case TAG_VOID:
+ r = 0;
+ break;
default:
r = buf_inspect_tag_size(pretty, &result);
}