diff --git a/src/services/upload/readFileService.ts b/src/services/upload/readFileService.ts
index 3cd5c3a64..a0ef5b76e 100644
--- a/src/services/upload/readFileService.ts
+++ b/src/services/upload/readFileService.ts
@@ -23,7 +23,7 @@ export async function getFileType(
     let fileType: FILE_TYPE;
     const mimeType = await getMimeType(worker, receivedFile);
     const typeParts = mimeType?.split('/');
-    if (typeParts?.length < 2) {
+    if (typeParts?.length !== 2) {
         return { fileType: FILE_TYPE.OTHERS, exactType: null };
     }
     switch (typeParts[0]) {