diff --git a/docs/visualization.md b/docs/visualization.md
index 00f3126d..57bb209a 100644
--- a/docs/visualization.md
+++ b/docs/visualization.md
@@ -78,9 +78,11 @@ draw_graph(triage_agent).view()
 By default, `draw_graph` displays the graph inline. To save it as a file, specify a filename:
 
 ```python
-draw_graph(triage_agent, filename="agent_graph.png")
+draw_graph(triage_agent, filename="agent_graph")
 ```
 
-This will generate `agent_graph.png` in the working directory.
+This will generate two files in the working directory:
+- `agent_graph` — the DOT language script used to generate the graph.
+- `agent_graph.png` — the rendered graph image (PNG is the default format),