diff --git a/clang-tools-extra/clang-tidy/modernize/UseDefaultCheck.cpp b/clang-tools-extra/clang-tidy/modernize/UseDefaultCheck.cpp
index 098f86403f65..68ead15e2240 100644
--- a/clang-tools-extra/clang-tidy/modernize/UseDefaultCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/UseDefaultCheck.cpp
@@ -302,7 +302,7 @@ void UseDefaultCheck::check(const MatchFinder::MatchResult &Result) {
       if (!StartLoc.isValid())
         return;
     }
-  } else if (dyn_cast<CXXDestructorDecl>(SpecialFunctionDecl)) {
+  } else if (isa<CXXDestructorDecl>(SpecialFunctionDecl)) {
     SpecialFunctionName = "destructor";
   } else {
     if (!isCopyAssignmentAndCanBeDefaulted(Result.Context, SpecialFunctionDecl))