diff --git a/lib/ProxySQL_Admin.cpp b/lib/ProxySQL_Admin.cpp
index 6166add5c..1bcd32eb9 100644
--- a/lib/ProxySQL_Admin.cpp
+++ b/lib/ProxySQL_Admin.cpp
@@ -3128,6 +3128,21 @@ void ProxySQL_Admin::load_mysql_servers_to_runtime() {
 	}
 	if (resultset) delete resultset;
 	resultset=NULL;
+
+	query=(char *)"SELECT a.* FROM mysql_replication_hostgroups a JOIN mysql_replication_hostgroups b ON a.writer_hostgroup=b.reader_hostgroup WHERE b.reader_hostgroup";
+	proxy_debug(PROXY_DEBUG_ADMIN, 4, "%s\n", query);
+	admindb->execute_statement(query, &error , &cols , &affected_rows , &resultset);
+	if (error) {
+		proxy_error("Error on %s : %s\n", query, error);
+	} else {
+		for (std::vector<SQLite3_row *>::iterator it = resultset->rows.begin() ; it != resultset->rows.end(); ++it) {
+			SQLite3_row *r=*it;
+			proxy_error("Incompatible entry in mysql_replication_hostgroups will be ignored : ( %s , %s )\n", r->fields[0], r->fields[1]);
+		}
+	}
+	if (resultset) delete resultset;
+	resultset=NULL;
+
 	query=(char *)"SELECT a.* FROM mysql_replication_hostgroups a LEFT JOIN mysql_replication_hostgroups b ON a.writer_hostgroup=b.reader_hostgroup WHERE b.reader_hostgroup IS NULL";	
 	proxy_debug(PROXY_DEBUG_ADMIN, 4, "%s\n", query);
 	admindb->execute_statement(query, &error , &cols , &affected_rows , &resultset);