diff --git a/src/app/ui/search/section-search-file.tsx b/src/app/ui/search/section-search-file.tsx
index b5224b0..a158b17 100644
--- a/src/app/ui/search/section-search-file.tsx
+++ b/src/app/ui/search/section-search-file.tsx
@@ -321,14 +321,14 @@ export default function SectionSearchFile() {
 					style={{ display: 'none' }}
 					onChange={handleFileInputChange}
 					aria-label="Выбор файла для защиты"
-					disabled={isFileSearchLoading || (uploadProgress !== undefined && uploadProgress !== 100)}
+					disabled={isFileSearchLoading || (uploadProgress && uploadProgress !== 100 ? true : false)}
 				/>
 
 				<button
 					className="btn btn-primary"
 					onClick={handleButtonClick}
 					type="button"
-					disabled={isFileSearchLoading || (uploadProgress !== undefined && uploadProgress !== 100)}
+					disabled={isFileSearchLoading || (uploadProgress && uploadProgress !== 100 ? true : false)}
 				>
 					Выбрать файл
 				</button>