diff --git a/providers/os/os.go b/providers/os/os.go
index ed6179a..060dc55 100644
--- a/providers/os/os.go
+++ b/providers/os/os.go
@@ -40,7 +40,7 @@ func (this *Provider) FuncMapFor (document *step.Document) template.FuncMap {
 		"appendFile":    stat.funcAppendFile,
 		"removeFile":    stat.funcRemoveFile,
 		"rename":        stat.funcRename,
-		// TODO: createDir, createDirAll, removeDir, chmod
+		// TODO: temporary files, dirs
 	}
 }
 
@@ -159,6 +159,8 @@ func (this *state) funcRemoveFile (name string) error {
 func (this *state) funcRename (name, newName string) error {
 	name, err := this.document.Rel(name)
 	if err != nil { return err }
+	newName, err = this.document.Rel(newName)
+	if err != nil { return err }
 	return os.Rename(name, newName)
 }