diff --git a/src/net/http/fs.go b/src/net/http/fs.go
index bf63bb5441..51b6b1d32f 100644
--- a/src/net/http/fs.go
+++ b/src/net/http/fs.go
@@ -34,8 +34,7 @@ import (
 type Dir string
 
 func (d Dir) Open(name string) (File, error) {
-	if filepath.Separator != '/' && strings.ContainsRune(name, filepath.Separator) ||
-		strings.Contains(name, "\x00") {
+	if filepath.Separator != '/' && strings.ContainsRune(name, filepath.Separator) {
 		return nil, errors.New("http: invalid character in file path")
 	}
 	dir := string(d)