diff --git a/api/src/main/kotlin/com/few/api/domain/subscription/usecase/SubscribeWorkbookUseCase.kt b/api/src/main/kotlin/com/few/api/domain/subscription/usecase/SubscribeWorkbookUseCase.kt
index f3a8ce912..209b12a22 100644
--- a/api/src/main/kotlin/com/few/api/domain/subscription/usecase/SubscribeWorkbookUseCase.kt
+++ b/api/src/main/kotlin/com/few/api/domain/subscription/usecase/SubscribeWorkbookUseCase.kt
@@ -86,7 +86,7 @@ class SubscribeWorkbookUseCase(
             WorkbookSubscriptionEvent(
                 workbookId = subTargetWorkbookId,
                 memberId = memberId,
-                articleDayCol = subscriptionStatus?.day ?: 1
+                articleDayCol = workbookSubscriptionHistory.subDay
             )
         )
     }