diff --git a/refl1d/bumps_interface/migrations.py b/refl1d/bumps_interface/migrations.py
index 01d9dc2f..60a4535e 100644
--- a/refl1d/bumps_interface/migrations.py
+++ b/refl1d/bumps_interface/migrations.py
@@ -20,7 +20,7 @@ def migrate(
 
     if from_version is None:
         libraries = serialized.get("libraries", {})
-        from_version = libraries.get("refl1d", {}).get("schema", "0")
+        from_version = libraries.get("refl1d", {}).get("schema_version", "0")
 
     current_version = from_version
     while current_version != to_version: