diff --git a/LSP.md b/LSP.md
index 5d400da..83a613e 100644
--- a/LSP.md
+++ b/LSP.md
@@ -17,6 +17,7 @@ MaskRay's random complaints about Language Server Protocol
 * `textDocument/implementation` isn't clear. `textDocument/definition` isn't clear when it comes to the difference of declaration/definition.
 * `namespace DocumentHighlightKind` is not a bitmask. `Read` and `Write` cannot coexist.
 * Why can't we get more `namespace SymbolKind` constants sooner? https://github.com/Microsoft/language-server-protocol/issues/344
+* `textDocument/signatureHelp`: the position of `ParameterInformation::label` is unspecified: it is difficult to highlight `ParameterInformation::label` in `SignatureInformation::label`
 
 ## Stuff that needs attention