diff --git a/dao/src/main/java/org/thingsboard/server/dao/relation/BaseRelationService.java b/dao/src/main/java/org/thingsboard/server/dao/relation/BaseRelationService.java
index 59668c8..9b89fe2 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/relation/BaseRelationService.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/relation/BaseRelationService.java
@@ -555,6 +555,9 @@ public class BaseRelationService implements RelationService {
private ListenableFuture<List<EntityRelation>> findRelations(final EntityId rootId, final EntitySearchDirection direction, RelationTypeGroup relationTypeGroup) {
ListenableFuture<List<EntityRelation>> relations;
+ if (relationTypeGroup == null) {
+ relationTypeGroup = RelationTypeGroup.COMMON;
+ }
if (direction == EntitySearchDirection.FROM) {
relations = findByFromAsync(rootId, relationTypeGroup);
} else {
