diff --git a/src/Http/Controllers/ImportController.php b/src/Http/Controllers/ImportController.php
index 869ee8e..b41b745 100644
--- a/src/Http/Controllers/ImportController.php
+++ b/src/Http/Controllers/ImportController.php
@@ -172,7 +172,7 @@ public function update(Request $request, Import $import)
                 'path' => $path,
                 'destination' => collect($values['destination'])->filter()->all(),
                 'strategy' => $values['strategy'],
-                'source' => $values['source'],
+                'source' => $values['source'] ?? null,
                 'mappings' => $values['mappings'],
                 'unique_field' => $values['unique_field'],
             ]));