diff --git a/src/main/java/NextLevel/demo/funding/repository/OptionFundingRepository.java b/src/main/java/NextLevel/demo/funding/repository/OptionFundingRepository.java
index 030d498..d8c3e71 100644
--- a/src/main/java/NextLevel/demo/funding/repository/OptionFundingRepository.java
+++ b/src/main/java/NextLevel/demo/funding/repository/OptionFundingRepository.java
@@ -12,10 +12,9 @@
 @Repository
 public interface OptionFundingRepository extends JpaRepository<OptionFundingEntity, Long> {
 
-    @Query("select sum(f.count * f.option.price - coalesce(f.coupon.price, 0)) " +
-            "from OptionEntity o left join o.fundings f " +
-            "where o.project.id = :projectId " +
-            "group by f")
+    @Query("select sum(of.count * of.option.price - coalesce(of.coupon.price, 0)) " +
+            "from OptionFundingEntity of " +
+            "where of.option.project.id = :projectId ")
     Long getTotalPriceByProject(@Param("projectId") Long projectId);
 
     @Query("select sum(of.count) " +
diff --git a/src/main/java/NextLevel/demo/project/project/dto/response/ResponseProjectDetailDto.java b/src/main/java/NextLevel/demo/project/project/dto/response/ResponseProjectDetailDto.java
index c74cd08..90aef74 100644
--- a/src/main/java/NextLevel/demo/project/project/dto/response/ResponseProjectDetailDto.java
+++ b/src/main/java/NextLevel/demo/project/project/dto/response/ResponseProjectDetailDto.java
@@ -71,7 +71,7 @@ public static ResponseProjectDetailDto of(
         dto.sum = fundingPrice;
         dto.completionRate = FundingUtil.getCompletionRate(dto.sum, dto.goal);
         dto.likeCount = likeCount!=null?likeCount.intValue():0;
-        dto.isAuthor = entity.getUser().getId().equals(userId);
+        dto.isAuthor = userId != null && entity.getUser().getId().equals(userId);
         dto.status = entity.getProjectStatus().name();
         dto.startAt = entity.getStartAt();
         dto.expiredAt = entity.getExpiredAt();