diff --git a/lang/cpp/src/configuration.h b/lang/cpp/src/configuration.h
index 2e577156..24995dd4 100644
--- a/lang/cpp/src/configuration.h
+++ b/lang/cpp/src/configuration.h
@@ -98,8 +98,7 @@ public:
     explicit Component(const shared_gpgme_conf_comp_t &gpgme_comp)
         : comp(gpgme_comp) {}
 
-    // copy ctor is ok
-
+    Component(const Component &other) = default;
     const Component &operator=(const Component &other)
     {
         if (this != &other) {
@@ -149,6 +148,7 @@ public:
     Option(const shared_gpgme_conf_comp_t &gpgme_comp, gpgme_conf_opt_t gpgme_opt)
         : comp(gpgme_comp), opt(gpgme_opt) {}
 
+    Option(const Option &other) = default;
     const Option &operator=(const Option &other)
     {
         if (this != &other) {
diff --git a/lang/cpp/src/data.h b/lang/cpp/src/data.h
index df8607e7..649e4104 100644
--- a/lang/cpp/src/data.h
+++ b/lang/cpp/src/data.h
@@ -60,6 +60,7 @@ public:
 
     static const Null null;
 
+    Data(const Data &other) = default;
     const Data &operator=(Data other)
     {
         swap(other);
diff --git a/lang/cpp/src/decryptionresult.h b/lang/cpp/src/decryptionresult.h
index e4d542dd..84026d39 100644
--- a/lang/cpp/src/decryptionresult.h
+++ b/lang/cpp/src/decryptionresult.h
@@ -47,6 +47,7 @@ public:
     DecryptionResult(gpgme_ctx_t ctx, const Error &err);
     explicit DecryptionResult(const Error &err);
 
+    DecryptionResult(const DecryptionResult &other) = default;
     const DecryptionResult &operator=(DecryptionResult other)
     {
         swap(other);
@@ -103,6 +104,7 @@ public:
     Recipient();
     explicit Recipient(gpgme_recipient_t reci);
 
+    Recipient(const Recipient &other) = default;
     const Recipient &operator=(Recipient other)
     {
         swap(other);
diff --git a/lang/cpp/src/encryptionresult.h b/lang/cpp/src/encryptionresult.h
index 312dfec7..1aea6bb8 100644
--- a/lang/cpp/src/encryptionresult.h
+++ b/lang/cpp/src/encryptionresult.h
@@ -48,6 +48,7 @@ public:
     EncryptionResult(gpgme_ctx_t ctx, const Error &error);
     EncryptionResult(const Error &err);
 
+    EncryptionResult(const EncryptionResult &other) = default;
     const EncryptionResult &operator=(EncryptionResult other)
     {
         swap(other);
@@ -83,6 +84,7 @@ class GPGMEPP_EXPORT InvalidRecipient
 public:
     InvalidRecipient();
 
+    InvalidRecipient(const InvalidRecipient &other) = default;
     const InvalidRecipient &operator=(InvalidRecipient other)
     {
         swap(other);
diff --git a/lang/cpp/src/engineinfo.h b/lang/cpp/src/engineinfo.h
index 52bf3474..ce7b4eaf 100644
--- a/lang/cpp/src/engineinfo.h
+++ b/lang/cpp/src/engineinfo.h
@@ -151,6 +151,7 @@ public:
     EngineInfo();
     explicit EngineInfo(gpgme_engine_info_t engine);
 
+    EngineInfo(const EngineInfo &other) = default;
     const EngineInfo &operator=(EngineInfo other)
     {
         swap(other);
diff --git a/lang/cpp/src/importresult.h b/lang/cpp/src/importresult.h
index 59366984..a2749331 100644
--- a/lang/cpp/src/importresult.h
+++ b/lang/cpp/src/importresult.h
@@ -47,6 +47,7 @@ public:
     ImportResult(gpgme_ctx_t ctx, const Error &error);
     explicit ImportResult(const Error &error);
 
+    ImportResult(const ImportResult &other) = default;
     const ImportResult &operator=(ImportResult other)
     {
         swap(other);
@@ -106,6 +107,7 @@ class GPGMEPP_EXPORT Import
 public:
     Import();
 
+    Import(const Import &other) = default;
     const Import &operator=(Import other)
     {
         swap(other);
diff --git a/lang/cpp/src/key.h b/lang/cpp/src/key.h
index 0e6380db..09f1879f 100644
--- a/lang/cpp/src/key.h
+++ b/lang/cpp/src/key.h
@@ -71,6 +71,7 @@ public:
 
     static const Null null;
 
+    Key(const Key &other) = default;
     const Key &operator=(Key other)
     {
         swap(other);
@@ -228,6 +229,7 @@ public:
     Subkey(const shared_gpgme_key_t &key, gpgme_sub_key_t subkey);
     Subkey(const shared_gpgme_key_t &key, unsigned int idx);
 
+    Subkey(const Subkey &other) = default;
     const Subkey &operator=(Subkey other)
     {
         swap(other);
@@ -341,6 +343,7 @@ public:
     UserID(const shared_gpgme_key_t &key, gpgme_user_id_t uid);
     UserID(const shared_gpgme_key_t &key, unsigned int idx);
 
+    UserID(const UserID &other) = default;
     const UserID &operator=(UserID other)
     {
         swap(other);
@@ -459,6 +462,7 @@ public:
     Signature(const shared_gpgme_key_t &key, gpgme_user_id_t uid, gpgme_key_sig_t sig);
     Signature(const shared_gpgme_key_t &key, gpgme_user_id_t uid, unsigned int idx);
 
+    Signature(const Signature &other) = default;
     const Signature &operator=(Signature other)
     {
         swap(other);
diff --git a/lang/cpp/src/keygenerationresult.h b/lang/cpp/src/keygenerationresult.h
index a92151b4..1cbc9dd3 100644
--- a/lang/cpp/src/keygenerationresult.h
+++ b/lang/cpp/src/keygenerationresult.h
@@ -44,6 +44,7 @@ public:
     KeyGenerationResult(gpgme_ctx_t ctx, const Error &error);
     explicit KeyGenerationResult(const Error &err);
 
+    KeyGenerationResult(const KeyGenerationResult &other) = default;
     const KeyGenerationResult &operator=(KeyGenerationResult other)
     {
         swap(other);
diff --git a/lang/cpp/src/keylistresult.h b/lang/cpp/src/keylistresult.h
index d0a86900..68e2a17b 100644
--- a/lang/cpp/src/keylistresult.h
+++ b/lang/cpp/src/keylistresult.h
@@ -45,6 +45,7 @@ public:
     explicit KeyListResult(const Error &err);
     KeyListResult(const Error &err, const _gpgme_op_keylist_result &res);
 
+    KeyListResult(const KeyListResult &other) = default;
     const KeyListResult &operator=(KeyListResult other)
     {
         swap(other);
diff --git a/lang/cpp/src/notation.h b/lang/cpp/src/notation.h
index 5b89214c..b1ff2d50 100644
--- a/lang/cpp/src/notation.h
+++ b/lang/cpp/src/notation.h
@@ -44,6 +44,7 @@ public:
     Notation();
     explicit Notation(gpgme_sig_notation_t nota);
 
+    Notation(const Notation &other) = default;
     const Notation &operator=(Notation other)
     {
         swap(other);
diff --git a/lang/cpp/src/signingresult.h b/lang/cpp/src/signingresult.h
index c6654fca..0c2994c7 100644
--- a/lang/cpp/src/signingresult.h
+++ b/lang/cpp/src/signingresult.h
@@ -50,6 +50,7 @@ public:
     SigningResult(gpgme_ctx_t ctx, const Error &error);
     explicit SigningResult(const Error &err);
 
+    SigningResult(const SigningResult &other) = default;
     const SigningResult &operator=(SigningResult other)
     {
         swap(other);
@@ -86,6 +87,7 @@ class GPGMEPP_EXPORT InvalidSigningKey
 public:
     InvalidSigningKey();
 
+    InvalidSigningKey(const InvalidSigningKey &other) = default;
     const InvalidSigningKey &operator=(InvalidSigningKey other)
     {
         swap(other);
@@ -119,6 +121,7 @@ public:
 
     CreatedSignature();
 
+    CreatedSignature(const CreatedSignature &other) = default;
     const CreatedSignature &operator=(CreatedSignature other)
     {
         swap(other);
diff --git a/lang/cpp/src/swdbresult.h b/lang/cpp/src/swdbresult.h
index d13b57c8..d4340fe1 100644
--- a/lang/cpp/src/swdbresult.h
+++ b/lang/cpp/src/swdbresult.h
@@ -62,6 +62,7 @@ public:
                                          const char *iversion = NULL,
                                          Error *err = NULL);
 
+    SwdbResult(const SwdbResult &other) = default;
     const SwdbResult &operator=(SwdbResult other)
     {
         swap(other);
diff --git a/lang/cpp/src/tofuinfo.h b/lang/cpp/src/tofuinfo.h
index 5bb024f2..67ed62a5 100644
--- a/lang/cpp/src/tofuinfo.h
+++ b/lang/cpp/src/tofuinfo.h
@@ -39,6 +39,7 @@ public:
     TofuInfo();
     explicit TofuInfo(gpgme_tofu_info_t info);
 
+    TofuInfo(const TofuInfo &other) = default;
     const TofuInfo &operator=(TofuInfo other)
     {
         swap(other);
diff --git a/lang/cpp/src/verificationresult.h b/lang/cpp/src/verificationresult.h
index 3f6299ca..f43bd39f 100644
--- a/lang/cpp/src/verificationresult.h
+++ b/lang/cpp/src/verificationresult.h
@@ -52,6 +52,7 @@ public:
     VerificationResult(gpgme_ctx_t ctx, const Error &error);
     explicit VerificationResult(const Error &err);
 
+    VerificationResult(const VerificationResult &other) = default;
     const VerificationResult &operator=(VerificationResult other)
     {
         swap(other);
@@ -90,6 +91,7 @@ public:
 
     Signature();
 
+    Signature(const Signature &other) = default;
     const Signature &operator=(Signature other)
     {
         swap(other);
diff --git a/lang/cpp/src/vfsmountresult.h b/lang/cpp/src/vfsmountresult.h
index b46eeb1c..6bc67ba3 100644
--- a/lang/cpp/src/vfsmountresult.h
+++ b/lang/cpp/src/vfsmountresult.h
@@ -45,6 +45,7 @@ public:
     VfsMountResult(gpgme_ctx_t ctx, const Error &error, const Error &opError);
     explicit VfsMountResult(const Error &err);
 
+    VfsMountResult(const VfsMountResult &other) = default;
     const VfsMountResult &operator=(VfsMountResult other)
     {
         swap(other);