diff --git a/src/models/entities/RunnerCard.ts b/src/models/entities/RunnerCard.ts
index 66f063d..3efdedf 100644
--- a/src/models/entities/RunnerCard.ts
+++ b/src/models/entities/RunnerCard.ts
@@ -70,7 +70,7 @@ export class RunnerCard {
     if (id.length > 11) {
       throw new RunnerCardIdOutOfRangeError();
     }
-    while (id.length < 11) { id = '0' + id; }
+    while (id.length < 6) { id = '0' + id; }
     id = '2' + id;
 
     return id;