diff --git a/fstest/fstests/fstests.go b/fstest/fstests/fstests.go
index 2c07b941d..310b31a91 100644
--- a/fstest/fstests/fstests.go
+++ b/fstest/fstests/fstests.go
@@ -429,7 +429,7 @@ func Run(t *testing.T, opt *Opt) {
 	t.Run("FsName", func(t *testing.T) {
 		skipIfNotOk(t)
 		got := remote.Name()
-		want := remoteName[:strings.IndexRune(remoteName, ':')+1]
+		want := remoteName[:strings.LastIndex(remoteName, ":")+1]
 		if isLocalRemote {
 			want = "local:"
 		}