diff --git a/api/src/workflows/quiz.ts b/api/src/workflows/quiz.ts
index 5230542..c529f8a 100644
--- a/api/src/workflows/quiz.ts
+++ b/api/src/workflows/quiz.ts
@@ -101,7 +101,9 @@ export class QuizWorkflow extends ConfiguredInstance {
 						}
 					}
 					break;
-				}
+        }
+
+        if (receivedPlayers.has(response.playerId)) continue;
 
 				receivedPlayers.add(response.playerId);
 				const answeredAt = Date.now();