diff --git a/dnet-ariadneplus/src/main/resources/es/schemaAriadneplusElasticsearch.curl b/dnet-ariadneplus/src/main/resources/es/schemaAriadneplusElasticsearch.curl
index 99a0e05..268525c 100644
--- a/dnet-ariadneplus/src/main/resources/es/schemaAriadneplusElasticsearch.curl
+++ b/dnet-ariadneplus/src/main/resources/es/schemaAriadneplusElasticsearch.curl
@@ -1,5 +1,15 @@
 curl -X PUT "http://elastic-test.ariadne.d4science.org:9200/ariadneplus_test?pretty" -H 'Content-Type: application/json'     -d '
 {
+    "settings": {
+        "analysis": {
+          "normalizer": {
+            "useLowercase": {
+              "type": "custom",
+              "filter": [ "lowercase" ]
+            }
+          }
+        }
+    },
    "mappings": {
       "dynamic": false,
       "properties": {
@@ -9,6 +19,7 @@ curl -X PUT "http://elastic-test.ariadne.d4science.org:9200/ariadneplus_test?pre
                   "type": "text",
                   "fields": {
                      "raw": {
+                        "normalizer":"useLowercase",
                         "type": "keyword"
                      }
                   }
@@ -129,6 +140,7 @@ curl -X PUT "http://elastic-test.ariadne.d4science.org:9200/ariadneplus_test?pre
                   "type": "text",
                   "fields": {
                      "raw": {
+                        "normalizer":"useLowercase",
                         "type": "keyword"
                      }
                   }
@@ -278,6 +290,7 @@ curl -X PUT "http://elastic-test.ariadne.d4science.org:9200/ariadneplus_test?pre
                   "type": "text",
                   "fields": {
                      "raw": {
+                        "normalizer":"useLowercase",
                         "type": "keyword"
                      }
                   }