diff --git a/clang-tools-extra/clangd/SemanticHighlighting.cpp b/clang-tools-extra/clangd/SemanticHighlighting.cpp
--- a/clang-tools-extra/clangd/SemanticHighlighting.cpp
+++ b/clang-tools-extra/clangd/SemanticHighlighting.cpp
@@ -917,7 +917,7 @@
          std::tie(R.R, R.Kind, R.Modifiers);
 }
 bool operator<(const HighlightingToken &L, const HighlightingToken &R) {
-  return std::tie(L.R, L.Kind, R.Modifiers) <
+  return std::tie(L.R, L.Kind, L.Modifiers) <
          std::tie(R.R, R.Kind, R.Modifiers);
 }