diff --git a/block_test.go b/block_test.go
index 0ca66dd..7debb9e 100644
--- a/block_test.go
+++ b/block_test.go
@@ -1731,7 +1731,7 @@ func TestSanitizedAnchorName(t *testing.T) {
 		},
 		{
 			text: "main.go",
-			want: "maingo",
+			want: "main-go",
 		},
 		{
 			text: "Article 123",