diff --git a/include/exiv2/basicio.hpp b/include/exiv2/basicio.hpp
index ff5b9cb2..869a8044 100644
--- a/include/exiv2/basicio.hpp
+++ b/include/exiv2/basicio.hpp
@@ -711,6 +711,9 @@ class EXIV2API XPathIo : public FileIo {
   ~XPathIo() override;
   //@}
 
+  XPathIo(const XPathIo&) = delete;
+  XPathIo& operator=(const XPathIo&) = delete;
+
   //! @name Manipulators
   //@{
   /*!
@@ -751,6 +754,9 @@ class EXIV2API RemoteIo : public BasicIo {
   ~RemoteIo() override;
   //@}
 
+  RemoteIo(const RemoteIo&) = delete;
+  RemoteIo& operator=(const RemoteIo&) = delete;
+
   //! @name Manipulators
   //@{
   /*!
@@ -920,6 +926,7 @@ class EXIV2API HttpIo : public RemoteIo {
    */
   explicit HttpIo(const std::string& url, size_t blockSize = 1024);
 
+  ~HttpIo() override = default;
   // NOT IMPLEMENTED
   //! Copy constructor
   HttpIo(const HttpIo&) = delete;
@@ -964,6 +971,7 @@ class EXIV2API CurlIo : public RemoteIo {
    */
   size_t write(BasicIo& src) override;
 
+  ~CurlIo() override = default;
   // NOT IMPLEMENTED
   //! Copy constructor
   CurlIo(const CurlIo&) = delete;
diff --git a/include/exiv2/bmpimage.hpp b/include/exiv2/bmpimage.hpp
index b4078a5e..b37d41b2 100644
--- a/include/exiv2/bmpimage.hpp
+++ b/include/exiv2/bmpimage.hpp
@@ -26,6 +26,7 @@ namespace Exiv2 {
  */
 class EXIV2API BmpImage : public Image {
  public:
+  ~BmpImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/cr2image.hpp b/include/exiv2/cr2image.hpp
index 9277e1cf..a7fc663d 100644
--- a/include/exiv2/cr2image.hpp
+++ b/include/exiv2/cr2image.hpp
@@ -71,6 +71,7 @@ class EXIV2API Cr2Image : public Image {
   [[nodiscard]] uint32_t pixelHeight() const override;
   //@}
 
+  ~Cr2Image() override = default;
   //! @name NOT implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/crwimage.hpp b/include/exiv2/crwimage.hpp
index 204fb79b..5a44b828 100644
--- a/include/exiv2/crwimage.hpp
+++ b/include/exiv2/crwimage.hpp
@@ -73,6 +73,7 @@ class EXIV2API CrwImage : public Image {
   [[nodiscard]] uint32_t pixelHeight() const override;
   //@}
 
+  ~CrwImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/datasets.hpp b/include/exiv2/datasets.hpp
index 1863cf6b..2d06e9e3 100644
--- a/include/exiv2/datasets.hpp
+++ b/include/exiv2/datasets.hpp
@@ -132,6 +132,7 @@ class EXIV2API IptcDataSets {
   static constexpr uint16_t Preview = 202;
   //@}
 
+  ~IptcDataSets() = delete;
   //! Prevent copy-construction: not implemented.
   IptcDataSets(const IptcDataSets&) = delete;
   //! Prevent assignment: not implemented.
@@ -263,7 +264,7 @@ class EXIV2API IptcKey : public Key {
   IptcKey(uint16_t tag, uint16_t record);
   //! Copy constructor
   IptcKey(const IptcKey& rhs);
-  IptcKey& operator=(const IptcKey&) = delete;
+  IptcKey& operator=(const IptcKey&) = default;
   //! Destructor
   ~IptcKey() override = default;
   //@}
diff --git a/include/exiv2/epsimage.hpp b/include/exiv2/epsimage.hpp
index 9f6e4c4e..a4b56b86 100644
--- a/include/exiv2/epsimage.hpp
+++ b/include/exiv2/epsimage.hpp
@@ -73,6 +73,7 @@ class EXIV2API EpsImage : public Image {
   [[nodiscard]] std::string mimeType() const override;
   //@}
 
+  ~EpsImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/gifimage.hpp b/include/exiv2/gifimage.hpp
index 62e936e8..93bd422f 100644
--- a/include/exiv2/gifimage.hpp
+++ b/include/exiv2/gifimage.hpp
@@ -21,6 +21,7 @@ namespace Exiv2 {
  */
 class EXIV2API GifImage : public Image {
  public:
+  ~GifImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/image.hpp b/include/exiv2/image.hpp
index 4ed55905..2a968fc3 100644
--- a/include/exiv2/image.hpp
+++ b/include/exiv2/image.hpp
@@ -656,6 +656,7 @@ class EXIV2API ImageFactory {
 
   //! @name Creators
   //@{
+  ~ImageFactory() = delete;
   //! Prevent copy construction: not implemented.
   ImageFactory(const ImageFactory&) = delete;
   ImageFactory& operator=(const ImageFactory&) = delete;
diff --git a/include/exiv2/jp2image.hpp b/include/exiv2/jp2image.hpp
index 4fc79950..ae1a03e6 100644
--- a/include/exiv2/jp2image.hpp
+++ b/include/exiv2/jp2image.hpp
@@ -64,6 +64,7 @@ class EXIV2API Jp2Image : public Image {
   [[nodiscard]] std::string mimeType() const override;
   //@}
 
+  ~Jp2Image() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/jpgimage.hpp b/include/exiv2/jpgimage.hpp
index 168031cb..1fde606b 100644
--- a/include/exiv2/jpgimage.hpp
+++ b/include/exiv2/jpgimage.hpp
@@ -83,6 +83,7 @@ class EXIV2API JpegBase : public Image {
   void printStructure(std::ostream& out, PrintStructureOption option, int depth) override;
   //@}
 
+  ~JpegBase() override = default;
   //! @name NOT implemented
   //@{
   //! Copy constructor
@@ -264,6 +265,7 @@ class EXIV2API JpegImage : public JpegBase {
   [[nodiscard]] std::string mimeType() const override;
   //@}
 
+  ~JpegImage() override = default;
   // NOT Implemented
   //! Copy constructor
   JpegImage(const JpegImage&) = delete;
@@ -323,6 +325,7 @@ class EXIV2API ExvImage : public JpegBase {
   [[nodiscard]] std::string mimeType() const override;
   //@}
 
+  ~ExvImage() override = default;
   // NOT Implemented
   //! Copy constructor
   ExvImage(const ExvImage&) = delete;
diff --git a/include/exiv2/metadatum.hpp b/include/exiv2/metadatum.hpp
index 6ffc2fd5..d54b2ac3 100644
--- a/include/exiv2/metadatum.hpp
+++ b/include/exiv2/metadatum.hpp
@@ -30,10 +30,11 @@ class EXIV2API Key {
 
   //! @name Creators
   //@{
+  Key() = default;
   //! Destructor
   virtual ~Key() = default;
   //@}
-
+  Key(const Key&) = default;
   //! @name Accessors
   //@{
   /*!
diff --git a/include/exiv2/mrwimage.hpp b/include/exiv2/mrwimage.hpp
index 229a96eb..8abd8df8 100644
--- a/include/exiv2/mrwimage.hpp
+++ b/include/exiv2/mrwimage.hpp
@@ -21,6 +21,7 @@ namespace Exiv2 {
  */
 class EXIV2API MrwImage : public Image {
  public:
+  ~MrwImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/orfimage.hpp b/include/exiv2/orfimage.hpp
index 4b960f6e..89df53bf 100644
--- a/include/exiv2/orfimage.hpp
+++ b/include/exiv2/orfimage.hpp
@@ -21,6 +21,7 @@ namespace Exiv2 {
  */
 class EXIV2API OrfImage : public TiffImage {
  public:
+  ~OrfImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/pgfimage.hpp b/include/exiv2/pgfimage.hpp
index f2cfcc79..f5428204 100644
--- a/include/exiv2/pgfimage.hpp
+++ b/include/exiv2/pgfimage.hpp
@@ -54,6 +54,7 @@ class EXIV2API PgfImage : public Image {
   }
   //@}
 
+  ~PgfImage() override = default;
   //! @name NOT implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/pngimage.hpp b/include/exiv2/pngimage.hpp
index fe9d8361..9c618785 100644
--- a/include/exiv2/pngimage.hpp
+++ b/include/exiv2/pngimage.hpp
@@ -60,6 +60,7 @@ class EXIV2API PngImage : public Image {
   [[nodiscard]] std::string mimeType() const override;
   //@}
 
+  ~PngImage() override = default;
   //! @name NOT implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/properties.hpp b/include/exiv2/properties.hpp
index 0527d37f..36dc8179 100644
--- a/include/exiv2/properties.hpp
+++ b/include/exiv2/properties.hpp
@@ -71,6 +71,7 @@ class EXIV2API XmpProperties {
   static const XmpNsInfo* lookupNsRegistryUnsafe(const XmpNsInfo::Prefix& prefix);
 
  public:
+  ~XmpProperties() = delete;
   //! Prevent copy-construction: not implemented.
   XmpProperties(const XmpProperties&) = delete;
   //! Prevent assignment: not implemented.
diff --git a/include/exiv2/psdimage.hpp b/include/exiv2/psdimage.hpp
index 7aa7767c..f0585343 100644
--- a/include/exiv2/psdimage.hpp
+++ b/include/exiv2/psdimage.hpp
@@ -20,6 +20,7 @@ namespace Exiv2 {
  */
 class EXIV2API PsdImage : public Image {
  public:
+  ~PsdImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/rafimage.hpp b/include/exiv2/rafimage.hpp
index 867355b3..5edd9460 100644
--- a/include/exiv2/rafimage.hpp
+++ b/include/exiv2/rafimage.hpp
@@ -74,6 +74,7 @@ class EXIV2API RafImage : public Image {
   [[nodiscard]] uint32_t pixelHeight() const override;
   //@}
 
+  ~RafImage() override = default;
   //! @name NOT implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/rw2image.hpp b/include/exiv2/rw2image.hpp
index 0cfa59ee..63a94066 100644
--- a/include/exiv2/rw2image.hpp
+++ b/include/exiv2/rw2image.hpp
@@ -72,6 +72,7 @@ class EXIV2API Rw2Image : public Image {
   [[nodiscard]] uint32_t pixelHeight() const override;
   //@}
 
+  ~Rw2Image() override = default;
   //! @name NOT implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/tags.hpp b/include/exiv2/tags.hpp
index f4a8f7ed..d043cca4 100644
--- a/include/exiv2/tags.hpp
+++ b/include/exiv2/tags.hpp
@@ -63,6 +63,7 @@ struct EXIV2API TagInfo {
 //! Access to Exif group and tag lists and misc. tag reference methods, implemented as a static class.
 class EXIV2API ExifTags {
  public:
+  ~ExifTags() = delete;
   //! Prevent copy-construction: not implemented.
   ExifTags(const ExifTags&) = delete;
   //! Prevent assignment: not implemented.
diff --git a/include/exiv2/tgaimage.hpp b/include/exiv2/tgaimage.hpp
index dc0220f3..232addf3 100644
--- a/include/exiv2/tgaimage.hpp
+++ b/include/exiv2/tgaimage.hpp
@@ -20,6 +20,7 @@ namespace Exiv2 {
  */
 class EXIV2API TgaImage : public Image {
  public:
+  ~TgaImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/tiffimage.hpp b/include/exiv2/tiffimage.hpp
index 87080df3..121c9021 100644
--- a/include/exiv2/tiffimage.hpp
+++ b/include/exiv2/tiffimage.hpp
@@ -68,6 +68,7 @@ class EXIV2API TiffImage : public Image {
   uint32_t pixelHeight() const override;
   //@}
 
+  ~TiffImage() override = default;
   //! @name NOT Implemented
   //@{
   //! Copy constructor
diff --git a/include/exiv2/types.hpp b/include/exiv2/types.hpp
index d4ffeb2e..03419f0f 100644
--- a/include/exiv2/types.hpp
+++ b/include/exiv2/types.hpp
@@ -121,6 +121,7 @@ class EXIV2API TypeInfo {
   TypeInfo(const TypeInfo&) = delete;
   //! Prevent assignment: not implemented.
   TypeInfo& operator=(const TypeInfo&) = delete;
+  ~TypeInfo() = delete;
 
   //! Return the name of the type, 0 if unknown.
   static const char* typeName(TypeId typeId);
diff --git a/include/exiv2/value.hpp b/include/exiv2/value.hpp
index df4742c5..b22b47c9 100644
--- a/include/exiv2/value.hpp
+++ b/include/exiv2/value.hpp
@@ -38,6 +38,7 @@ class EXIV2API Value {
   //@{
   //! Constructor, taking a type id to initialize the base class with
   explicit Value(TypeId typeId);
+  Value(const Value&) = default;
   //! Virtual destructor.
   virtual ~Value() = default;
   //@}
@@ -489,6 +490,7 @@ class EXIV2API CommentValue : public StringValueBase {
     CharsetInfo(const CharsetInfo&) = delete;
     //! Prevent assignment: not implemented.
     CharsetInfo& operator=(const CharsetInfo&) = delete;
+    ~CharsetInfo() = delete;
 
     //! Return the name for a charset id
     static const char* name(CharsetId charsetId);
diff --git a/include/exiv2/xmpsidecar.hpp b/include/exiv2/xmpsidecar.hpp
index 653ee8d8..4a319398 100644
--- a/include/exiv2/xmpsidecar.hpp
+++ b/include/exiv2/xmpsidecar.hpp
@@ -54,13 +54,13 @@ class EXIV2API XmpSidecar : public Image {
   [[nodiscard]] std::string mimeType() const override;
   //@}
 
- private:
   //! @name NOT Implemented
   //@{
+  ~XmpSidecar() override = default;
   //! Copy constructor
-  XmpSidecar(const XmpSidecar& rhs);
+  XmpSidecar(const XmpSidecar&) = delete;
   //! Assignment operator
-  XmpSidecar& operator=(const XmpSidecar& rhs);
+  XmpSidecar& operator=(const XmpSidecar&) = delete;
   //@}
 
   Exiv2::Dictionary dates_;