diff --git a/internal/company/entity.go b/internal/company/entity.go
index 171b9dd..24ecbd1 100644
--- a/internal/company/entity.go
+++ b/internal/company/entity.go
@@ -51,7 +51,7 @@ type Company struct {
 	Email *string `bson:"email,omitempty" json:"email,omitempty"`
 
 	// File references stored in GridFS
-	DocumentFileIDs []string `bson:"document_file_ids,omitempty" json:"document_file_ids,omitempty"`
+	DocumentFileIDs []string `bson:"document_file_ids" json:"document_file_ids,omitempty"`
 
 	// Tags for categorization and search
 	Tags *CompanyTags `bson:"tags,omitempty" json:"tags,omitempty"`
diff --git a/internal/company/repository.go b/internal/company/repository.go
index 7f4778e..dd3cdd5 100644
--- a/internal/company/repository.go
+++ b/internal/company/repository.go
@@ -169,6 +169,8 @@ func (r *companyRepository) Update(ctx context.Context, company *Company) error
 	// Set updated timestamp using Unix timestamp
 	company.SetUpdatedAt(time.Now().Unix())
 
+	clearDocuments := company.DocumentFileIDs != nil && len(company.DocumentFileIDs) == 0
+
 	// Use ORM to update company
 	err := r.ormRepo.Update(ctx, company)
 	if err != nil {
@@ -179,6 +181,23 @@ func (r *companyRepository) Update(ctx context.Context, company *Company) error
 		return err
 	}
 
+	// BSON omitempty can skip empty slices in $set, so persist an explicit empty array.
+	if clearDocuments {
+		_, err = r.collection.UpdateOne(ctx, bson.M{"_id": company.ID}, bson.M{
+			"$set": bson.M{
+				"document_file_ids": []string{},
+				"updated_at":        company.UpdatedAt,
+			},
+		})
+		if err != nil {
+			r.logger.Error("Failed to clear company document file IDs", map[string]interface{}{
+				"error":      err.Error(),
+				"company_id": company.ID,
+			})
+			return err
+		}
+	}
+
 	r.logger.Info("Company updated successfully", map[string]interface{}{
 		"company_id": company.ID,
 		"name":       company.Name,