diff --git a/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.cpp
index 620a57194acb8e..3d1f63fcf33a5a 100644
--- a/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/ExceptionEscapeCheck.cpp
@@ -20,7 +20,7 @@ namespace {
 
 AST_MATCHER_P(FunctionDecl, isEnabled, llvm::StringSet<>,
               FunctionsThatShouldNotThrow) {
-  return FunctionsThatShouldNotThrow.count(Node.getNameAsString()) > 0;
+  return FunctionsThatShouldNotThrow.contains(Node.getNameAsString());
 }
 
 AST_MATCHER(FunctionDecl, isExplicitThrow) {
diff --git a/clang-tools-extra/clang-tidy/utils/ExceptionAnalyzer.cpp b/clang-tools-extra/clang-tidy/utils/ExceptionAnalyzer.cpp
index 9bfb7e2677533a..431dcb521029f2 100644
--- a/clang-tools-extra/clang-tidy/utils/ExceptionAnalyzer.cpp
+++ b/clang-tools-extra/clang-tidy/utils/ExceptionAnalyzer.cpp
@@ -418,7 +418,7 @@ ExceptionAnalyzer::ExceptionInfo::filterIgnoredExceptions(
       if (TD->getDeclName().isIdentifier()) {
         if ((IgnoreBadAlloc &&
              (TD->getName() == "bad_alloc" && TD->isInStdNamespace())) ||
-            (IgnoredTypes.count(TD->getName()) > 0))
+            (IgnoredTypes.contains(TD->getName())))
           TypesToDelete.push_back(T);
       }
     }
@@ -449,7 +449,7 @@ void ExceptionAnalyzer::ExceptionInfo::reevaluateBehaviour() {
 ExceptionAnalyzer::ExceptionInfo ExceptionAnalyzer::throwsException(
     const FunctionDecl *Func, const ExceptionInfo::Throwables &Caught,
     llvm::SmallSet<const FunctionDecl *, 32> &CallStack) {
-  if (!Func || CallStack.count(Func) || (!CallStack.empty() && !canThrow(Func)))
+  if (!Func || CallStack.contains(Func) || (!CallStack.empty() && !canThrow(Func)))
     return ExceptionInfo::createNonThrowing();
 
   if (const Stmt *Body = Func->getBody()) {
@@ -507,7 +507,7 @@ ExceptionAnalyzer::ExceptionInfo ExceptionAnalyzer::throwsException(
     for (unsigned I = 0; I < Try->getNumHandlers(); ++I) {
       const CXXCatchStmt *Catch = Try->getHandler(I);
 
-      // Everything is catched through 'catch(...)'.
+      // Everything is caught through 'catch(...)'.
       if (!Catch->getExceptionDecl()) {
         ExceptionInfo Rethrown = throwsException(
             Catch->getHandlerBlock(), Uncaught.getExceptionTypes(), CallStack);
diff --git a/clang-tools-extra/clang-tidy/utils/ExceptionAnalyzer.h b/clang-tools-extra/clang-tidy/utils/ExceptionAnalyzer.h
index 0a8cf8668d3ca9..d8471f4d4c6cbc 100644
--- a/clang-tools-extra/clang-tidy/utils/ExceptionAnalyzer.h
+++ b/clang-tools-extra/clang-tidy/utils/ExceptionAnalyzer.h
@@ -101,7 +101,7 @@ class ExceptionAnalyzer {
     /// Recalculate the 'Behaviour' for example after filtering.
     void reevaluateBehaviour();
 
-    /// Keep track if the entity related to this 'ExceptionInfo' can in princple
+    /// Keep track if the entity related to this 'ExceptionInfo' can in principle
     /// throw, if it's unknown or if it won't throw.
     State Behaviour;