diff --git a/duniter4j-elasticsearch/src/main/java/org/duniter/elasticsearch/service/UserService.java b/duniter4j-elasticsearch/src/main/java/org/duniter/elasticsearch/service/UserService.java
index 5967d7fc6d63a197f718e4d8ad0634548491fbf3..37fa19ca51e49c467e9925a269d72a1cb5c76c73 100644
--- a/duniter4j-elasticsearch/src/main/java/org/duniter/elasticsearch/service/UserService.java
+++ b/duniter4j-elasticsearch/src/main/java/org/duniter/elasticsearch/service/UserService.java
@@ -119,6 +119,7 @@ public class UserService extends AbstractService {
 
         IndexResponse response = client.prepareIndex(INDEX, PROFILE_TYPE)
                 .setSource(profileJson)
+                .setId(issuer) // always use the issuer pubkey as id
                 .setRefresh(false)
                 .execute().actionGet();
         return response.getId();