diff --git a/src/space-model/services/tag-model.service.ts b/src/space-model/services/tag-model.service.ts
index 7394ed8..b663590 100644
--- a/src/space-model/services/tag-model.service.ts
+++ b/src/space-model/services/tag-model.service.ts
@@ -44,8 +44,8 @@ export class TagModelService {
       );
     }
 
-    const tagEntitiesToCreate = tags.filter((tagDto) => tagDto.uuid === null);
-    const tagEntitiesToUpdate = tags.filter((tagDto) => tagDto.uuid !== null);
+    const tagEntitiesToCreate = tags.filter((tagDto) => !tagDto.uuid);
+    const tagEntitiesToUpdate = tags.filter((tagDto) => !!tagDto.uuid);
 
     try {
       const createdTags = await this.bulkSaveTags(
diff --git a/src/space/services/tag/tag.service.ts b/src/space/services/tag/tag.service.ts
index f5059e6..2dee0c7 100644
--- a/src/space/services/tag/tag.service.ts
+++ b/src/space/services/tag/tag.service.ts
@@ -33,7 +33,7 @@ export class TagService {
     this.ensureNoDuplicateTags(combinedTags);
 
     const tagEntitiesToCreate = tags.filter((tagDto) => !tagDto.uuid);
-    const tagEntitiesToUpdate = tags.filter((tagDto) => tagDto.uuid !== null);
+    const tagEntitiesToUpdate = tags.filter((tagDto) => !!tagDto.uuid);
 
     try {
       const createdTags = await this.bulkSaveTags(