diff --git a/src/main/java/com/on/server/domain/chat/application/ChatService.java b/src/main/java/com/on/server/domain/chat/application/ChatService.java
index ea38dbe2..5258c8fd 100644
--- a/src/main/java/com/on/server/domain/chat/application/ChatService.java
+++ b/src/main/java/com/on/server/domain/chat/application/ChatService.java
@@ -389,7 +389,7 @@ public void completeRecruit(User user, Long roomId) {
         // 2. companyParticipant status -> participant로 바꾸기
         User userParticipant = chattingRoom.getChatUserOne();
 
-        CompanyParticipant companyParticipant = companyParticipantRepository.findByUser(userParticipant);
+        CompanyParticipant companyParticipant = companyParticipantRepository.findByUserAndCompanyPostId(userParticipant, companyPost.getId());
 
         // 상태 업데이트
         companyParticipant.setCompanyParticipantstatus(PARTICIPANT);
diff --git a/src/main/java/com/on/server/domain/companyParticipant/domain/repository/CompanyParticipantRepository.java b/src/main/java/com/on/server/domain/companyParticipant/domain/repository/CompanyParticipantRepository.java
index 1bbfa6dc..1f8a4451 100644
--- a/src/main/java/com/on/server/domain/companyParticipant/domain/repository/CompanyParticipantRepository.java
+++ b/src/main/java/com/on/server/domain/companyParticipant/domain/repository/CompanyParticipantRepository.java
@@ -8,5 +8,5 @@
 @Repository
 public interface CompanyParticipantRepository extends JpaRepository<CompanyParticipant, Long> {
 
-    CompanyParticipant findByUser(User user);
+    CompanyParticipant findByUserAndCompanyPostId(User userParticipant, Long companyPostId);
 }