diff --git a/scripts/migrate_phase3_mobile.php b/scripts/migrate_phase3_mobile.php
index 5a26e0c..ea3c7cb 100644
--- a/scripts/migrate_phase3_mobile.php
+++ b/scripts/migrate_phase3_mobile.php
@@ -68,7 +68,7 @@ $migrations = [
             id CHAR(36) {$charsetCollation} PRIMARY KEY,
             tenant_id CHAR(36) {$charsetCollation} NOT NULL,
             company_id CHAR(36) {$charsetCollation} NOT NULL,
-            uploaded_by CHAR(36) {$charsetCollation} NOT NULL,
+            uploaded_by CHAR(36) {$charsetCollation} NULL,
             total_images INT NOT NULL DEFAULT 0,
             processed_images INT NOT NULL DEFAULT 0,
             failed_images INT NOT NULL DEFAULT 0,