diff --git a/routes/deckbuilder.py b/routes/deckbuilder.py
index 7e8cafd..ef78253 100644
--- a/routes/deckbuilder.py
+++ b/routes/deckbuilder.py
@@ -783,7 +783,8 @@ async def export_deck_to_sim(deck_id: int):
     # Build .dck content
     lines = ["[metadata]"]
     deck_name = deck.get("name", f"Deck {deck_id}")
-    lines.append(f"Name={deck_name}")
+        lines.append(f"Name={deck_name}")
+    lines.append("Deck Type=Commander")
     lines.append("")
 
     commanders = [r for r in card_rows if r["is_commander"]]