diff --git a/advlabdb/models.py b/advlabdb/models.py
index 8cfc3b5..84d09c9 100644
--- a/advlabdb/models.py
+++ b/advlabdb/models.py
@@ -192,12 +192,17 @@ class Experiment(db.Model):
     active = db.Column(db.Boolean, default=True, nullable=False)
 
     oral_weighting = db.Column(
-        db.Float, db.CheckConstraint("oral_weighting >= 0"), db.CheckConstraint("oral_weighting <= 1"), nullable=False
+        db.Float,
+        db.CheckConstraint("oral_weighting >= 0"),
+        db.CheckConstraint("oral_weighting <= 1"),
+        default=0.5,
+        nullable=False,
     )
     protocol_weighting = db.Column(
         db.Float,
         db.CheckConstraint("protocol_weighting >= 0"),
         db.CheckConstraint("protocol_weighting <= 1"),
+        default=0.5,
         nullable=False,
     )
     final_weighting = db.Column(
@@ -399,14 +404,12 @@ class ExperimentMark(db.Model):
         db.Integer,
         db.CheckConstraint("oral_mark > -1"),
         db.CheckConstraint("oral_mark < 16"),
-        default=0.5,
         nullable=True,
     )
     protocol_mark = db.Column(
         db.Integer,
         db.CheckConstraint("protocol_mark > -1"),
         db.CheckConstraint("protocol_mark < 16"),
-        default=0.5,
         nullable=True,
     )