diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidReferenceCoroutineParametersCheck.h b/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidReferenceCoroutineParametersCheck.h
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidReferenceCoroutineParametersCheck.h
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidReferenceCoroutineParametersCheck.h
@@ -23,11 +23,12 @@
 /// http://clang.llvm.org/extra/clang-tidy/checks/cppcoreguidelines/avoid-reference-coroutine-parameters.html
 class AvoidReferenceCoroutineParametersCheck : public ClangTidyCheck {
 public:
-  AvoidReferenceCoroutineParametersCheck(StringRef Name, ClangTidyContext *Context)
+  AvoidReferenceCoroutineParametersCheck(StringRef Name,
+                                         ClangTidyContext *Context)
       : ClangTidyCheck(Name, Context) {}
   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
-  bool isLanguageVersionSupported(const LangOptions &LO) const override {
+  bool isLanguageVersionSupported(const LangOpts &LO) const override {
     return LO.CPlusPlus20;
   }
 };
diff --git a/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidReferenceCoroutineParametersCheck.cpp b/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidReferenceCoroutineParametersCheck.cpp
--- a/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidReferenceCoroutineParametersCheck.cpp
+++ b/clang-tools-extra/clang-tidy/cppcoreguidelines/AvoidReferenceCoroutineParametersCheck.cpp
@@ -28,9 +28,9 @@
 
 void AvoidReferenceCoroutineParametersCheck::check(
     const MatchFinder::MatchResult &Result) {
-  const auto *Param = Result.Nodes.getNodeAs<ParmVarDecl>("param");
-
-  diag(Param->getBeginLoc(), "coroutine parameters should not be references");
+  if (const auto *Param = Result.Nodes.getNodeAs<ParmVarDecl>("param")) {
+    diag(Param->getBeginLoc(), "coroutine parameters should not be references");
+  }
 }
 
 } // namespace cppcoreguidelines
diff --git a/clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines/avoid-reference-coroutine-parameters.rst b/clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines/avoid-reference-coroutine-parameters.rst
--- a/clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines/avoid-reference-coroutine-parameters.rst
+++ b/clang-tools-extra/docs/clang-tidy/checks/cppcoreguidelines/avoid-reference-coroutine-parameters.rst
@@ -17,4 +17,4 @@
   }
 
 This check implements
-`CppCoreGuideline CP.53 <http://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines>`_.
+`CppCoreGuideline CP.53 <https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#Rcoro-reference-parameters>`_.
diff --git a/clang-tools-extra/docs/clang-tidy/checks/list.rst b/clang-tools-extra/docs/clang-tidy/checks/list.rst
--- a/clang-tools-extra/docs/clang-tidy/checks/list.rst
+++ b/clang-tools-extra/docs/clang-tidy/checks/list.rst
@@ -182,7 +182,7 @@
    `cppcoreguidelines-avoid-do-while <cppcoreguidelines/avoid-do-while.html>`_,
    `cppcoreguidelines-avoid-goto <cppcoreguidelines/avoid-goto.html>`_,
    `cppcoreguidelines-avoid-non-const-global-variables <cppcoreguidelines/avoid-non-const-global-variables.html>`_,
-   `cppcoreguidelines-avoid-reference-coroutine-parameters <cppcoreguidelines/avoid-reference-coroutine-parameters.html>`_, "Yes"
+   `cppcoreguidelines-avoid-reference-coroutine-parameters <cppcoreguidelines/avoid-reference-coroutine-parameters.html>`_,
    `cppcoreguidelines-init-variables <cppcoreguidelines/init-variables.html>`_, "Yes"
    `cppcoreguidelines-interfaces-global-init <cppcoreguidelines/interfaces-global-init.html>`_,
    `cppcoreguidelines-macro-usage <cppcoreguidelines/macro-usage.html>`_,