diff --git a/src/lib.rs b/src/lib.rs
index 8918a04..cad5405 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -857,6 +857,9 @@ line1
 
         // Check `expect![[  ]]` as well.
         assert_eq!(locate_end("[]]"), Some(2));
+        // For `expect![]]`, this will be invalid syntax: Syntax Error: expected SEMICOLON
+        // In `locate_end`, we just find the first `]` is the end position and ignores the rest.
+        assert_eq!(locate_end("]]"), Some(0));
     }
 
     #[test]