diff --git a/code/UploadifyField.php b/code/UploadifyField.php
index 114b51f..3558525 100644
--- a/code/UploadifyField.php
+++ b/code/UploadifyField.php
@@ -308,10 +308,10 @@ public function upload() {
 			$u = new Upload();
 			$u->loadIntoFile($_FILES['Filedata'], $file, $upload_folder);
 			$file->write();
-			echo $file->ID;
+			return $file->ID;
 		} 
 		else {
-			echo ' '; // return something or SWFUpload won't fire uploadSuccess
+			return ' '; // return something or SWFUpload won't fire uploadSuccess
 		}
 	}