diff --git a/backend/src/models/project.py b/backend/src/models/project.py
index a2451ae7..39959a06 100644
--- a/backend/src/models/project.py
+++ b/backend/src/models/project.py
@@ -6,8 +6,8 @@ from ..config.database import Base
 
 
 class AdjustmentEnum(str, Enum):
-    YES = "是"
-    NO = "否"
+    YES = "yes"
+    NO = "no"
 
 
 class Project(Base):