diff --git a/src/main/java/com/bbteam/budgetbuddies/domain/expense/converter/ExpenseConverter.java b/src/main/java/com/bbteam/budgetbuddies/domain/expense/converter/ExpenseConverter.java
index 23b1790e..d4353d6d 100644
--- a/src/main/java/com/bbteam/budgetbuddies/domain/expense/converter/ExpenseConverter.java
+++ b/src/main/java/com/bbteam/budgetbuddies/domain/expense/converter/ExpenseConverter.java
@@ -59,6 +59,7 @@ private CompactExpenseResponseDto toExpenseCompactResponseDto(Expense expense) {
 			.description(expense.getDescription())
 			.amount(expense.getAmount())
 			.expenseDate(expense.getExpenseDate())
+			.categoryId(expense.getCategory().getId())
 			.build();
 	}
 }