diff --git a/config/mongo_idx.js b/config/mongo_idx.js
index 1b8ad988..960c94ce 100644
--- a/config/mongo_idx.js
+++ b/config/mongo_idx.js
@@ -11,4 +11,4 @@ db.template.createIndex({'name': 1})
 db.heatmap.createIndex({"provenance.image.slide": 1, "provenance.analysis.execution_id": 1})
 db.heatmap.createIndex({"provenance.image.slide": 1})
 db.heatmapEdit.createIndex({"provenance.image.slide":1, "provenance.analysis.execution_id":1, "user_id":1})
-db.configuration.createIndex({'config_name': 1}, { unique: true })
+db.config.createIndex({'name': 1}, { unique: true })