diff --git a/cvat-core/src/annotations.ts b/cvat-core/src/annotations.ts
index d092413ba960..034067993083 100644
--- a/cvat-core/src/annotations.ts
+++ b/cvat-core/src/annotations.ts
@@ -309,7 +309,7 @@ export function importDataset(
         '.zip', '.xml', '.json',
     ];
     if (typeof file === 'string' && !(allowedFileExtensions.some((ext) => file.toLowerCase().endsWith(ext)))) {
-        throw new ArgumentError('File must be file instance with ZIP extension');
+        throw new ArgumentError('File must be file instance with eigther ZIP, XML or JSON extension');
     }
     const allowedMimeTypes = [
         'application/zip', 'application/x-zip-compressed',
@@ -317,7 +317,7 @@ export function importDataset(
         'application/json',
     ];
     if (file instanceof File && !(allowedMimeTypes.includes(file.type))) {
-        throw new ArgumentError('File must be file instance with ZIP extension');
+        throw new ArgumentError('File must be file instance with eigther ZIP, XML or JSON extension');
     }
 
     if (instance instanceof Project) {