diff --git a/migrations/versions/d5a224bf5862_change_theme_from_original_to_core.py b/migrations/versions/d5a224bf5862_change_theme_from_original_to_core.py
new file mode 100644
index 00000000..57b9b2f6
--- /dev/null
+++ b/migrations/versions/d5a224bf5862_change_theme_from_original_to_core.py
@@ -0,0 +1,51 @@
+"""Change theme from original to core
+
+Revision ID: d5a224bf5862
+Revises: c12d2a1b0926
+Create Date: 2017-12-13 16:06:51.644187
+
+"""
+from CTFd.models import db
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+from sqlalchemy.sql import text, table, column, and_
+
+# revision identifiers, used by Alembic.
+revision = 'd5a224bf5862'
+down_revision = 'c12d2a1b0926'
+branch_labels = None
+depends_on = None
+
+
+config_table = table('config',
+    column('id', db.Integer),
+    column('key', db.Text),
+    column('value', db.Text)
+)
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    connection = op.get_bind()
+    connection.execute(
+        config_table.update().where(
+            and_(config_table.c.key == 'ctf_theme', config_table.c.value == 'original')
+        ).values(
+            value='core'
+        )
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    connection = op.get_bind()
+    connection.execute(
+        config_table.update().where(
+            and_(config_table.c.key == 'ctf_theme', config_table.c.value == 'core')
+        ).values(
+            value='original'
+        )
+    )
+    # ### end Alembic commands ###