diff --git a/backend/src/database/repositories/organizationRepository.ts b/backend/src/database/repositories/organizationRepository.ts
index b753f00eb8..3e19c1d5c6 100644
--- a/backend/src/database/repositories/organizationRepository.ts
+++ b/backend/src/database/repositories/organizationRepository.ts
@@ -341,7 +341,8 @@ class OrganizationRepository {
           const existingOrg = existingOrgs.find((o) => o.id === org.id)
           if (existingOrg && existingOrg.tags) {
             // Merge existing and new tags without duplicates
-            org.tags = lodash.uniq([...existingOrg.tags, ...org.tags])
+            const incomingTags = org.tags || []
+            org.tags = lodash.uniq([...existingOrg.tags, ...incomingTags])
           }
           return org
         })