diff --git a/litestream_windows.go b/litestream_windows.go
index ba745b5..67457ef 100644
--- a/litestream_windows.go
+++ b/litestream_windows.go
@@ -4,7 +4,6 @@ package litestream
 
 import (
 	"os"
-	"syscall"
 )
 
 // fileinfo returns syscall fields from a FileInfo object.
@@ -15,7 +14,7 @@ func fileinfo(fi os.FileInfo) (uid, gid int) {
 // fixRootDirectory is copied from the standard library for use with mkdirAll()
 func fixRootDirectory(p string) string {
 	if len(p) == len(`\\?\c:`) {
-		if IsPathSeparator(p[0]) && IsPathSeparator(p[1]) && p[2] == '?' && IsPathSeparator(p[3]) && p[5] == ':' {
+		if os.IsPathSeparator(p[0]) && os.IsPathSeparator(p[1]) && p[2] == '?' && os.IsPathSeparator(p[3]) && p[5] == ':' {
 			return p + `\`
 		}
 	}