diff --git a/src/main/java/eu/dnetlib/repo/manager/service/PiWikServiceImpl.java b/src/main/java/eu/dnetlib/repo/manager/service/PiWikServiceImpl.java
index 9de38ab..f5c9d56 100644
--- a/src/main/java/eu/dnetlib/repo/manager/service/PiWikServiceImpl.java
+++ b/src/main/java/eu/dnetlib/repo/manager/service/PiWikServiceImpl.java
@@ -52,7 +52,7 @@ public class PiWikServiceImpl implements PiWikService {
     private EmailUtils emailUtils;
 
 
-    private static final String GET_PIWIK_SITE = "select repositoryid, siteid, authenticationtoken, creationdate, requestorname, requestoremail, validated, validationdate, comment, repositoryname, country from piwik_site where repositoryid = ?;";
+    private static final String GET_PIWIK_SITE = "select repositoryid, siteid, authenticationtoken, creationdate, requestorname, requestoremail, validated, validationdate, comment, repositoryname, country from piwik_site where repositoryid = ? LIMIT 1;";
 
     private static final String INSERT_PIWIK_INFO = "insert into piwik_site (repositoryid, siteid, creationdate, requestorname, requestoremail, validated, repositoryname, country, authenticationtoken) values (?, ?, now(), ?, ?, ?, ?, ?, ?)";