diff --git a/server/src/seed-dev-data.ts b/server/src/seed-dev-data.ts
index d9f80fa..94c03af 100644
--- a/server/src/seed-dev-data.ts
+++ b/server/src/seed-dev-data.ts
@@ -35,11 +35,11 @@ export async function seedDevData(): Promise<void> {
 
   // Add DM as dm, player as player
   await db.execute(
-    "INSERT INTO campaign_members (campaign_id, user_id, role) VALUES (?, ?, 'dm')",
+    "INSERT IGNORE INTO campaign_members (campaign_id, user_id, role) VALUES (?, ?, 'dm')",
     [campaignId, dmId]
   );
   await db.execute(
-    "INSERT INTO campaign_members (campaign_id, user_id, role) VALUES (?, ?, 'player')",
+    "INSERT IGNORE INTO campaign_members (campaign_id, user_id, role) VALUES (?, ?, 'player')",
     [campaignId, playerId]
   );