diff --git a/backend/canisters/airdrop_bot/CHANGELOG.md b/backend/canisters/airdrop_bot/CHANGELOG.md
index 909c771f52..332af0d144 100644
--- a/backend/canisters/airdrop_bot/CHANGELOG.md
+++ b/backend/canisters/airdrop_bot/CHANGELOG.md
@@ -8,3 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Added
 
 - Add Airdrop Bot ([#6088](https://github.com/open-chat-labs/open-chat/pull/6088))
+
+### Changed
+
+- Ensure users can't win multiple lottery prizes in a single draw ([#6187](https://github.com/open-chat-labs/open-chat/pull/6187))
diff --git a/backend/canisters/airdrop_bot/impl/src/model/airdrops.rs b/backend/canisters/airdrop_bot/impl/src/model/airdrops.rs
index 877453ff20..bb58e8b7ae 100644
--- a/backend/canisters/airdrop_bot/impl/src/model/airdrops.rs
+++ b/backend/canisters/airdrop_bot/impl/src/model/airdrops.rs
@@ -162,6 +162,9 @@ impl Airdrops {
 
             let winner = ticket_holders.remove(winning_ticket);
 
+            // Ensure the same user can't win multiple times
+            ticket_holders.retain(|u| *u != winner);
+
             lottery_winners.push((
                 winner,
                 Prize {