diff --git a/quantum/db/migration/alembic_migrations/versions/folsom_initial.py b/quantum/db/migration/alembic_migrations/versions/folsom_initial.py
index 6eb7ceab68..ee85e2f114 100644
--- a/quantum/db/migration/alembic_migrations/versions/folsom_initial.py
+++ b/quantum/db/migration/alembic_migrations/versions/folsom_initial.py
@@ -176,7 +176,7 @@ def upgrade_base():
 
     op.create_table(
         'ipavailabilityranges',
-        sa.Column('allocation_pool_id', sa.String(length=36), nullable=True),
+        sa.Column('allocation_pool_id', sa.String(length=36), nullable=False),
         sa.Column('first_ip', sa.String(length=64), nullable=False),
         sa.Column('last_ip', sa.String(length=64), nullable=False),
         sa.ForeignKeyConstraint(['allocation_pool_id'],
diff --git a/quantum/db/models_v2.py b/quantum/db/models_v2.py
index 760355beb3..def066d99a 100644
--- a/quantum/db/models_v2.py
+++ b/quantum/db/models_v2.py
@@ -50,7 +50,7 @@ class IPAvailabilityRange(model_base.BASEV2):
     allocation_pool_id = sa.Column(sa.String(36),
                                    sa.ForeignKey('ipallocationpools.id',
                                                  ondelete="CASCADE"),
-                                   nullable=True,
+                                   nullable=False,
                                    primary_key=True)
     first_ip = sa.Column(sa.String(64), nullable=False, primary_key=True)
     last_ip = sa.Column(sa.String(64), nullable=False, primary_key=True)