diff --git a/client/ovpncli.hpp b/client/ovpncli.hpp
index e73e62c5..c531e384 100644
--- a/client/ovpncli.hpp
+++ b/client/ovpncli.hpp
@@ -452,9 +452,7 @@ struct LogInfo
 struct LogReceiver
 {
     virtual void log(const LogInfo &) = 0;
-    virtual ~LogReceiver()
-    {
-    }
+    virtual ~LogReceiver() = default;
 };
 
 // used to pass stats for an interface
diff --git a/openvpn/apple/cf/error.hpp b/openvpn/apple/cf/error.hpp
index 07f62fe3..267f53af 100644
--- a/openvpn/apple/cf/error.hpp
+++ b/openvpn/apple/cf/error.hpp
@@ -55,9 +55,7 @@ class CFException : public std::exception
         return errtxt;
     }
 
-    virtual ~CFException() noexcept
-    {
-    }
+    virtual ~CFException() noexcept = default;
 
   private:
     void set_errtxt(const std::string &text, const OSStatus status)
diff --git a/openvpn/apple/reach.hpp b/openvpn/apple/reach.hpp
index 70089e99..a54665bd 100644
--- a/openvpn/apple/reach.hpp
+++ b/openvpn/apple/reach.hpp
@@ -38,9 +38,7 @@ struct ReachabilityInterface
     virtual Status reachable() const = 0;
     virtual bool reachableVia(const std::string &net_type) const = 0;
     virtual std::string to_string() const = 0;
-    virtual ~ReachabilityInterface()
-    {
-    }
+    virtual ~ReachabilityInterface() = default;
 };
 } // namespace openvpn
 #endif
diff --git a/openvpn/apple/reachable.hpp b/openvpn/apple/reachable.hpp
index c499a50f..82a54931 100644
--- a/openvpn/apple/reachable.hpp
+++ b/openvpn/apple/reachable.hpp
@@ -205,9 +205,7 @@ class ReachabilityBase
     virtual Type vtype() const = 0;
     virtual Status vstatus(const SCNetworkReachabilityFlags flags) const = 0;
 
-    virtual ~ReachabilityBase()
-    {
-    }
+    virtual ~ReachabilityBase() = default;
 
     CF::NetworkReachability reach;
 };
diff --git a/openvpn/aws/awsrest.hpp b/openvpn/aws/awsrest.hpp
index 04714ceb..d7e4b6df 100644
--- a/openvpn/aws/awsrest.hpp
+++ b/openvpn/aws/awsrest.hpp
@@ -242,9 +242,7 @@ class REST
             return date.substr(0, 8) + '/' + region + '/' + service + "/aws4_request";
         }
 
-        virtual ~QueryBuilder()
-        {
-        }
+        virtual ~QueryBuilder() = default;
     };
 };
 } // namespace openvpn::AWS
diff --git a/openvpn/common/action.hpp b/openvpn/common/action.hpp
index 8e280774..fa81f0ca 100644
--- a/openvpn/common/action.hpp
+++ b/openvpn/common/action.hpp
@@ -48,9 +48,7 @@ struct Action : public RC<thread_unsafe_refcount>
         throw Exception("Action::to_json() virtual method not implemented");
     }
 #endif
-    virtual ~Action()
-    {
-    }
+    virtual ~Action() = default;
 };
 
 class ActionList : public std::vector<Action::Ptr>, public DestructorBase
diff --git a/openvpn/common/destruct.hpp b/openvpn/common/destruct.hpp
index f452bbe3..26759867 100644
--- a/openvpn/common/destruct.hpp
+++ b/openvpn/common/destruct.hpp
@@ -32,9 +32,7 @@ struct DestructorBase : public RC<thread_unsafe_refcount>
 {
     typedef RCPtr<DestructorBase> Ptr;
     virtual void destroy(std::ostream &os) = 0;
-    virtual ~DestructorBase()
-    {
-    }
+    virtual ~DestructorBase() = default;
 };
 
 } // namespace openvpn
diff --git a/openvpn/common/rc.hpp b/openvpn/common/rc.hpp
index fc4b01ac..1757a0bc 100644
--- a/openvpn/common/rc.hpp
+++ b/openvpn/common/rc.hpp
@@ -989,8 +989,8 @@ template <typename RCImpl>
 class RCCopyable
 {
   public:
-    virtual ~RCCopyable(){};
-    RCCopyable() noexcept {};
+    virtual ~RCCopyable() = default;
+    RCCopyable() noexcept = default;
     RCCopyable(const RCCopyable &) noexcept;
     RCCopyable(RCCopyable &&) noexcept;
     RCCopyable &operator=(const RCCopyable &) noexcept;
@@ -1318,13 +1318,9 @@ template <typename RCImpl>
 class RCWeak<RCImpl>::NotifyBase
 {
   public:
-    NotifyBase() noexcept
-    {
-    }
+    NotifyBase() noexcept = default;
     virtual void call() noexcept = 0;
-    virtual ~NotifyBase()
-    {
-    }
+    virtual ~NotifyBase() = default;
     NotifyBase *next = nullptr;
 
   private:
diff --git a/openvpn/common/redir.hpp b/openvpn/common/redir.hpp
index 2470b921..bcce8e92 100644
--- a/openvpn/common/redir.hpp
+++ b/openvpn/common/redir.hpp
@@ -49,9 +49,7 @@ struct RedirectBase
     OPENVPN_EXCEPTION(redirect_std_err);
     virtual void redirect() = 0;
     virtual void close() = 0;
-    virtual ~RedirectBase()
-    {
-    }
+    virtual ~RedirectBase() = default;
 };
 
 struct RedirectStdFD : public RedirectBase
diff --git a/openvpn/common/usergroup.hpp b/openvpn/common/usergroup.hpp
index 66277787..92a3a441 100644
--- a/openvpn/common/usergroup.hpp
+++ b/openvpn/common/usergroup.hpp
@@ -76,9 +76,7 @@ class SetUserGroup
         }
     }
 
-    virtual ~SetUserGroup()
-    {
-    }
+    virtual ~SetUserGroup() = default;
 
     const std::string &user() const
     {
diff --git a/openvpn/error/excode.hpp b/openvpn/error/excode.hpp
index d21d4260..a62b751d 100644
--- a/openvpn/error/excode.hpp
+++ b/openvpn/error/excode.hpp
@@ -75,9 +75,7 @@ class ExceptionCode : public std::exception
         return code_ != 0;
     }
 
-    virtual ~ExceptionCode() noexcept
-    {
-    }
+    virtual ~ExceptionCode() noexcept = default;
 
   private:
     static unsigned int mkcode(const Error::Type code, const bool fatal)
@@ -104,9 +102,7 @@ class ErrorCode : public ExceptionCode
         return err_.c_str();
     }
 
-    virtual ~ErrorCode() noexcept
-    {
-    }
+    virtual ~ErrorCode() noexcept = default;
 
   private:
     std::string err_;
diff --git a/openvpn/ovpnagent/mac/ovpnagent.cpp b/openvpn/ovpnagent/mac/ovpnagent.cpp
index c52b3657..f79427bb 100644
--- a/openvpn/ovpnagent/mac/ovpnagent.cpp
+++ b/openvpn/ovpnagent/mac/ovpnagent.cpp
@@ -343,13 +343,9 @@ class MyClientInstance : public WS::Server::Listener::Client
     MyClientInstance(WS::Server::Listener::Client::Initializer &ci)
         : WS::Server::Listener::Client(ci)
     {
-        // OPENVPN_LOG("INSTANCE START");
     }
 
-    virtual ~MyClientInstance()
-    {
-        // OPENVPN_LOG("INSTANCE DESTRUCT");
-    }
+    virtual ~MyClientInstance() = default;
 
   private:
     void generate_reply(const Json::Value &jout)
diff --git a/openvpn/ovpnagent/win/ovpnagent.cpp b/openvpn/ovpnagent/win/ovpnagent.cpp
index 0a351f30..5a835265 100644
--- a/openvpn/ovpnagent/win/ovpnagent.cpp
+++ b/openvpn/ovpnagent/win/ovpnagent.cpp
@@ -549,13 +549,9 @@ class MyClientInstance : public WS::Server::Listener::Client
     MyClientInstance(WS::Server::Listener::Client::Initializer &ci)
         : WS::Server::Listener::Client(ci)
     {
-        // OPENVPN_LOG("INSTANCE START");
     }
 
-    virtual ~MyClientInstance()
-    {
-        // OPENVPN_LOG("INSTANCE DESTRUCT");
-    }
+    virtual ~MyClientInstance() = default;
 
   private:
     void generate_reply(const Json::Value &jout)
diff --git a/openvpn/pki/epkibase.hpp b/openvpn/pki/epkibase.hpp
index f30ca7a6..d7939497 100644
--- a/openvpn/pki/epkibase.hpp
+++ b/openvpn/pki/epkibase.hpp
@@ -35,9 +35,7 @@ class ExternalPKIBase
     // Return true on success or false on error.
     virtual bool sign(const std::string &alias, const std::string &data, std::string &sig, const std::string &algorithm, const std::string &hashalg, const std::string &saltlen) = 0;
 
-    virtual ~ExternalPKIBase()
-    {
-    }
+    virtual ~ExternalPKIBase() = default;
 };
 
 class ExternalPKIImpl
diff --git a/openvpn/ssl/proto.hpp b/openvpn/ssl/proto.hpp
index 82b05cfa..6b331ae4 100644
--- a/openvpn/ssl/proto.hpp
+++ b/openvpn/ssl/proto.hpp
@@ -3949,9 +3949,7 @@ class ProtoContext : public logging::LoggingMixin<OPENVPN_DEBUG_PROTO,
         return bool(primary);
     }
 
-    virtual ~ProtoContext()
-    {
-    }
+    virtual ~ProtoContext() = default;
 
     // return the PacketType of an incoming network packet
     PacketType packet_type(const Buffer &buf)
diff --git a/openvpn/ssl/sess_ticket.hpp b/openvpn/ssl/sess_ticket.hpp
index b583a77e..edfccec2 100644
--- a/openvpn/ssl/sess_ticket.hpp
+++ b/openvpn/ssl/sess_ticket.hpp
@@ -222,9 +222,7 @@ class TLSSessionTicketBase
     // return string that identifies the app
     virtual std::string session_id_context() const = 0;
 
-    virtual ~TLSSessionTicketBase()
-    {
-    }
+    virtual ~TLSSessionTicketBase() = default;
 
   private:
     static void b64_to_key(const std::string &b64, const char *title, unsigned char *out, const size_t outlen)
diff --git a/openvpn/ssl/sni_handler.hpp b/openvpn/ssl/sni_handler.hpp
index cd22808d..ead60836 100644
--- a/openvpn/ssl/sni_handler.hpp
+++ b/openvpn/ssl/sni_handler.hpp
@@ -47,9 +47,7 @@ class HandlerBase
                                          SSLConfigAPI::Ptr default_factory) const = 0;
     // clang-format on
 
-    virtual ~HandlerBase()
-    {
-    }
+    virtual ~HandlerBase() = default;
 };
 
 } // namespace openvpn::SNI
diff --git a/openvpn/transport/client/extern/fw.hpp b/openvpn/transport/client/extern/fw.hpp
index 1d6b98db..86d2cd11 100644
--- a/openvpn/transport/client/extern/fw.hpp
+++ b/openvpn/transport/client/extern/fw.hpp
@@ -32,9 +32,7 @@ struct Config;
 struct Factory
 {
     virtual TransportClientFactory *new_transport_factory(const Config &conf) = 0;
-    virtual ~Factory()
-    {
-    }
+    virtual ~Factory() = default;
 };
 #else
 struct Factory
diff --git a/openvpn/transport/client/transbase.hpp b/openvpn/transport/client/transbase.hpp
index e6c1cc71..9d85889d 100644
--- a/openvpn/transport/client/transbase.hpp
+++ b/openvpn/transport/client/transbase.hpp
@@ -102,9 +102,7 @@ struct TransportClientParent
                                    unsigned int &keepalive_timeout) = 0;
     // clang-format on
 
-    virtual ~TransportClientParent()
-    {
-    }
+    virtual ~TransportClientParent() = default;
 };
 
 // Factory for client transport object.
diff --git a/openvpn/transport/gremlin.hpp b/openvpn/transport/gremlin.hpp
index c4c281a9..3461b26e 100644
--- a/openvpn/transport/gremlin.hpp
+++ b/openvpn/transport/gremlin.hpp
@@ -75,9 +75,7 @@ struct DelayedQueue : public RC<thread_unsafe_refcount>
     {
         virtual void call() = 0;
         virtual const Time &fire_time() = 0;
-        virtual ~EventBase()
-        {
-        }
+        virtual ~EventBase() = default;
     };
 
     template <class F>
diff --git a/openvpn/tun/builder/base.hpp b/openvpn/tun/builder/base.hpp
index 1e59a79b..1b6f976b 100644
--- a/openvpn/tun/builder/base.hpp
+++ b/openvpn/tun/builder/base.hpp
@@ -284,9 +284,7 @@ class TunBuilderBase
     {
     }
 
-    virtual ~TunBuilderBase()
-    {
-    }
+    virtual ~TunBuilderBase() = default;
 
 #ifdef ENABLE_OVPNDCO
     /**
diff --git a/openvpn/tun/builder/setup.hpp b/openvpn/tun/builder/setup.hpp
index f09f8535..fea93a82 100644
--- a/openvpn/tun/builder/setup.hpp
+++ b/openvpn/tun/builder/setup.hpp
@@ -36,9 +36,7 @@ struct Config
     virtual Json::Value to_json() = 0;
     virtual void from_json(const Json::Value &root, const std::string &title) = 0;
 #endif
-    virtual ~Config()
-    {
-    }
+    virtual ~Config() = default;
 };
 
 struct Base : public DestructorBase
diff --git a/openvpn/tun/extern/fw.hpp b/openvpn/tun/extern/fw.hpp
index 8ca2acc3..d89e40fc 100644
--- a/openvpn/tun/extern/fw.hpp
+++ b/openvpn/tun/extern/fw.hpp
@@ -34,9 +34,7 @@ struct Config; // defined in config.hpp
 struct Factory
 {
     virtual TunClientFactory *new_tun_factory(const Config &conf, const OptionList &opt) = 0;
-    virtual ~Factory()
-    {
-    }
+    virtual ~Factory() = default;
 };
 } // namespace ExternalTun