diff --git a/client/crashpad_client_linux.cc b/client/crashpad_client_linux.cc
index 9e5141f2..4fb99d84 100644
--- a/client/crashpad_client_linux.cc
+++ b/client/crashpad_client_linux.cc
@@ -164,6 +164,7 @@ class SignalHandler {
 
  protected:
   SignalHandler() = default;
+  ~SignalHandler() = default;
 
   bool Install(const std::set<int>* unhandled_signals) {
     DCHECK(!handler_);
diff --git a/tools/mac/catch_exception_tool.cc b/tools/mac/catch_exception_tool.cc
index 4f40372c..06fda23d 100644
--- a/tools/mac/catch_exception_tool.cc
+++ b/tools/mac/catch_exception_tool.cc
@@ -51,7 +51,7 @@ struct Options {
   MachMessageServer::Persistent persistent;
 };
 
-class ExceptionServer : public UniversalMachExcServer::Interface {
+class ExceptionServer final : public UniversalMachExcServer::Interface {
  public:
   ExceptionServer(const Options& options,
                   const std::string& me,