diff --git a/packages/primevue/src/fileupload/FileUpload.d.ts b/packages/primevue/src/fileupload/FileUpload.d.ts
index e79564145..863c58c6f 100755
--- a/packages/primevue/src/fileupload/FileUpload.d.ts
+++ b/packages/primevue/src/fileupload/FileUpload.d.ts
@@ -530,7 +530,7 @@ export interface FileUploadSlots {
         /**
          * Status messages about upload process.
          */
-        messages: string | undefined;
+        messages: string[] | null;
     }): VNode[];
     /**
      * Custom content when there is no selected file.