diff --git a/shopdb/core/api/shopdbbackups.py b/shopdb/core/api/shopdbbackups.py
index f2f69cb1..4081cc80 100644
--- a/shopdb/core/api/shopdbbackups.py
+++ b/shopdb/core/api/shopdbbackups.py
@@ -113,11 +113,17 @@ def _current_schema_revisions():
         return {}
 
     root = current_app.root_path
-    ini = os.path.join(os.path.dirname(root), 'migrations', 'alembic.ini')
+    migrations = os.path.join(os.path.dirname(root), 'migrations')
+    ini = os.path.join(migrations, 'alembic.ini')
     if not os.path.isfile(ini):
         return {}
     try:
         config = Config(ini)
+        # This is a Flask-Migrate project: alembic.ini carries no
+        # script_location (it is set at runtime), so ScriptDirectory.from_config
+        # would raise and leave every set reading as incompatible. Point it at
+        # the migrations directory - the same versions tree manifest.py scans.
+        config.set_main_option('script_location', migrations)
         script = ScriptDirectory.from_config(config)
         return {'core': list(script.get_heads())}
     except Exception: