diff --git a/django/applications/catmaid/migrations/0088_connector_geom_fix_bigint.py b/django/applications/catmaid/migrations/0088_connector_geom_fix_bigint.py
index 52ea2443ad..9b70d50ec5 100644
--- a/django/applications/catmaid/migrations/0088_connector_geom_fix_bigint.py
+++ b/django/applications/catmaid/migrations/0088_connector_geom_fix_bigint.py
@@ -11,7 +11,7 @@
     -- data type for its ID. All other constraints will be added after the data
     -- is copied.
     CREATE TABLE connector_geom (
-        id bigint NOT NULL,
+        id bigint PRIMARY KEY NOT NULL,
         project_id integer NOT NULL,
         geom geometry(PointZ) NOT NULL
     );