diff --git a/src/restic/fs/file.go b/src/restic/fs/file.go
index f6836eb8b..b11dfb48c 100644
--- a/src/restic/fs/file.go
+++ b/src/restic/fs/file.go
@@ -5,6 +5,7 @@ import (
 	"os"
 	"path/filepath"
 	"runtime"
+	"strings"
 )
 
 // File is an open file on a file system.
@@ -26,6 +27,13 @@ func fixpath(name string) string {
 	if runtime.GOOS == "windows" {
 		abspath, err := filepath.Abs(name)
 		if err == nil {
+			// Check if \\?\UNC\ already exist
+			if strings.HasPrefix(abspath, "\\\\?\\UNC\\") { return abspath }
+			// Check if \\?\ already exist
+			if strings.HasPrefix(abspath, "\\\\?\\") { return abspath }
+			// Check if path starts with \\
+			if strings.HasPrefix(abspath, "\\\\") { return strings.Replace(abspath, "\\\\", "\\\\?\\UNC\\", 1) }
+			// Normal path
 			return "\\\\?\\" + abspath
 		}
 	}