diff --git a/Design-Doc%3A-%60level%60-tool.md b/Design-Doc%3A-%60level%60-tool.md
index a471c58..0330572 100644
--- a/Design-Doc%3A-%60level%60-tool.md
+++ b/Design-Doc%3A-%60level%60-tool.md
@@ -49,7 +49,7 @@ The .lvl format is output by the `level` tool. It is a binary format ideal for u
 ```
 2 bytes: Number of entities
 For (number of entities):
-   * 2 bytes: Entity ID (-1 if not present)
+   * 2 bytes: Entity ID
 ```
 
 ### Component Definitions