diff --git a/backend/internal/domain/errors.go b/backend/internal/domain/errors.go
index cf9bba5..29da1a5 100644
--- a/backend/internal/domain/errors.go
+++ b/backend/internal/domain/errors.go
@@ -5,7 +5,7 @@ type ErrorCode string
 const (
 	// File errors
 	ErrFileNotFound     ErrorCode = "FILE_NOT_FOUND"
-	ErrMIMENotSupported ErrorCode = "MIME_NOT_SUPPORTEDF"
+	ErrMIMENotSupported ErrorCode = "MIME_NOT_SUPPORTED"
 
 	// Tag errors
 	ErrTagNotFound ErrorCode = "TAG_NOT_FOUND"