diff --git a/app/models.py b/app/models.py
index ecc2670e0..d8b364489 100644
--- a/app/models.py
+++ b/app/models.py
@@ -1035,7 +1035,7 @@ class JobStatistics(db.Model):
     __tablename__ = 'job_statistics'
 
     id = db.Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
-    job_id = db.Column(UUID(as_uuid=True), db.ForeignKey('jobs.id'), index=True, unique=True)
+    job_id = db.Column(UUID(as_uuid=True), db.ForeignKey('jobs.id'), index=True, unique=True, nullable=False)
     job = db.relationship('Job', backref=db.backref('job_statistics', lazy='dynamic'))
     emails_sent = db.Column(db.BigInteger, index=False, unique=False, nullable=False, default=0)
     emails_delivered = db.Column(db.BigInteger, index=False, unique=False, nullable=False, default=0)
diff --git a/migrations/versions/0083_add_job_stats.py b/migrations/versions/0083_add_job_stats.py
index cf028ded6..808b75c29 100644
--- a/migrations/versions/0083_add_job_stats.py
+++ b/migrations/versions/0083_add_job_stats.py
@@ -1,8 +1,8 @@
 """empty message
 
 Revision ID: 0083_add_job_stats
-Revises: 0080_fix_rate_start_date
-Create Date: 2017-05-09 12:44:43.173269
+Revises: 0082_add_go_live_template
+Create Date: 2017-05-12 13:16:14.147368
 
 """
 
@@ -17,7 +17,7 @@ from sqlalchemy.dialects import postgresql
 def upgrade():
     op.create_table('job_statistics',
     sa.Column('id', postgresql.UUID(as_uuid=True), nullable=False),
-    sa.Column('job_id', postgresql.UUID(as_uuid=True), nullable=True),
+    sa.Column('job_id', postgresql.UUID(as_uuid=True), nullable=False),
     sa.Column('emails_sent', sa.BigInteger(), nullable=False),
     sa.Column('emails_delivered', sa.BigInteger(), nullable=False),
     sa.Column('emails_failed', sa.BigInteger(), nullable=False),
@@ -26,6 +26,7 @@ def upgrade():
     sa.Column('sms_failed', sa.BigInteger(), nullable=False),
     sa.Column('letters_sent', sa.BigInteger(), nullable=False),
     sa.Column('letters_failed', sa.BigInteger(), nullable=False),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
     sa.Column('updated_at', sa.DateTime(), nullable=True),
     sa.ForeignKeyConstraint(['job_id'], ['jobs.id'], ),
     sa.PrimaryKeyConstraint('id')
diff --git a/migrations/versions/0084_add_created_to_job_stats.py b/migrations/versions/0084_add_created_to_job_stats.py
deleted file mode 100644
index c7470bef1..000000000
--- a/migrations/versions/0084_add_created_to_job_stats.py
+++ /dev/null
@@ -1,22 +0,0 @@
-"""empty message
-
-Revision ID: 0084_add_created_to_job_stats
-Revises: 0081_add_job_stats
-Create Date: 2017-05-11 15:05:53.420946
-
-"""
-
-# revision identifiers, used by Alembic.
-revision = '0084_add_created_to_job_stats'
-down_revision = '0083_add_job_stats'
-
-from alembic import op
-import sqlalchemy as sa
-
-
-def upgrade():
-    op.add_column('job_statistics', sa.Column('created_at', sa.DateTime(), nullable=True))
-
-
-def downgrade():
-    op.drop_column('job_statistics', 'created_at')