diff --git a/app/models/session.py b/app/models/session.py
index ae9c038..51ad9d0 100644
--- a/app/models/session.py
+++ b/app/models/session.py
@@ -106,11 +106,13 @@ class Session(Base):
         Float, nullable=False, default=0.0, comment="Total weight earned"
     )
     NM: Mapped[Union[int, None]] = mapped_column(
+        '"NM"',
         Integer,
         nullable=True,
         comment="Nilai Mentah (raw score) [0, 1000]",
     )
     NN: Mapped[Union[int, None]] = mapped_column(
+        '"NN"',
         Integer,
         nullable=True,
         comment="Nilai Nasional (normalized score) [0, 1000]",