diff --git a/include/zenoh-pico/api/macros.h b/include/zenoh-pico/api/macros.h
index 28b30382e..237876357 100644
--- a/include/zenoh-pico/api/macros.h
+++ b/include/zenoh-pico/api/macros.h
@@ -294,21 +294,14 @@
  *   Returns the cloned instance of `x`.
  */
 #define z_clone(x, y) _Generic((x), \
-                  z_owned_keyexpr_t : z_keyexpr_clone,                 \
                   z_owned_session_t : z_session_clone,                 \
-                  z_owned_subscriber_t : z_subscriber_clone,           \
-                  z_owned_publisher_t : z_publisher_clone,             \
-                  z_owned_queryable_t : z_queryable_clone,             \
                   z_owned_query_t : z_query_clone,                     \
                   z_owned_sample_t : z_sample_clone,                   \
                   z_owned_bytes_t : z_bytes_clone,                     \
                   z_owned_encoding_t : z_encoding_clone,               \
                   z_owned_reply_err_t : z_reply_err_clone,             \
                   z_owned_reply_t : z_reply_clone,                     \
-                  z_owned_hello_t : z_hello_clone,                     \
-                  z_owned_string_t : z_string_clone,                   \
-                  z_owned_string_array_t : z_string_array_clone,       \
-                  z_owned_config_t : z_config_clone                    \
+                  z_owned_string_t : z_string_clone                    \
             )(&x, y)
 
 /**
diff --git a/include/zenoh-pico/api/primitives.h b/include/zenoh-pico/api/primitives.h
index 05c56ad31..69036697d 100644
--- a/include/zenoh-pico/api/primitives.h
+++ b/include/zenoh-pico/api/primitives.h
@@ -1359,17 +1359,17 @@ _Z_OWNED_FUNCTIONS_DEF(string)
 _Z_OWNED_FUNCTIONS_DEF(keyexpr)
 _Z_OWNED_FUNCTIONS_NO_COPY_DEF(config)
 _Z_OWNED_FUNCTIONS_DEF(session)
-_Z_OWNED_FUNCTIONS_DEF(subscriber)
-_Z_OWNED_FUNCTIONS_DEF(publisher)
-_Z_OWNED_FUNCTIONS_DEF(queryable)
-_Z_OWNED_FUNCTIONS_DEF(hello)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(subscriber)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(publisher)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(queryable)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(hello)
 _Z_OWNED_FUNCTIONS_DEF(reply)
-_Z_OWNED_FUNCTIONS_DEF(string_array)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(string_array)
 _Z_OWNED_FUNCTIONS_DEF(sample)
 _Z_OWNED_FUNCTIONS_DEF(query)
 _Z_OWNED_FUNCTIONS_DEF(slice)
 _Z_OWNED_FUNCTIONS_DEF(bytes)
-_Z_OWNED_FUNCTIONS_DEF(reply_err)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(reply_err)
 _Z_OWNED_FUNCTIONS_DEF(encoding)
 
 _Z_OWNED_FUNCTIONS_CLOSURE_DEF(closure_sample)
diff --git a/src/api/api.c b/src/api/api.c
index e54c85d79..53db43e14 100644
--- a/src/api/api.c
+++ b/src/api/api.c
@@ -117,7 +117,7 @@ int8_t z_keyexpr_as_view_string(const z_loaned_keyexpr_t *keyexpr, z_view_string
 int8_t z_keyexpr_concat(z_owned_keyexpr_t *key, const z_loaned_keyexpr_t *left, const char *right, size_t len) {
     z_internal_keyexpr_null(key);
     if (len == 0) {
-        return z_keyexpr_clone(key, left);
+        return _z_keyexpr_copy(&key->_val, left);
     } else if (right == NULL) {
         return _Z_ERR_INVALID;
     }
@@ -770,7 +770,7 @@ _Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_string_t, string, _z_string_check, _z_string_nu
 _Bool _z_value_check(const _z_value_t *value) {
     return _z_encoding_check(&value->encoding) || _z_bytes_check(&value->payload);
 }
-_Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_value_t, reply_err, _z_value_check, _z_value_null, _z_value_copy, _z_value_clear)
+_Z_OWNED_FUNCTIONS_VALUE_NO_COPY_IMPL(_z_value_t, reply_err, _z_value_check, _z_value_null, _z_value_clear)
 
 _Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_keyexpr_t, keyexpr, _z_keyexpr_check, _z_keyexpr_null, _z_keyexpr_copy,
                               _z_keyexpr_clear)
@@ -778,7 +778,7 @@ _Z_VIEW_FUNCTIONS_IMPL(_z_keyexpr_t, keyexpr, _z_keyexpr_check, _z_keyexpr_null)
 _Z_VIEW_FUNCTIONS_IMPL(_z_string_t, string, _z_string_check, _z_string_null)
 _Z_VIEW_FUNCTIONS_IMPL(_z_slice_t, slice, _z_slice_check, _z_slice_empty)
 
-_Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_hello_t, hello, _z_hello_check, _z_hello_null, _z_hello_copy, _z_hello_clear)
+_Z_OWNED_FUNCTIONS_VALUE_NO_COPY_IMPL(_z_hello_t, hello, _z_hello_check, _z_hello_null, _z_hello_clear)
 
 z_id_t z_hello_zid(const z_loaned_hello_t *hello) { return hello->_zid; }
 
@@ -814,8 +814,8 @@ int8_t _z_string_array_copy(_z_string_svec_t *dst, const _z_string_svec_t *src)
     return dst->_len == src->_len ? _Z_RES_OK : _Z_ERR_SYSTEM_OUT_OF_MEMORY;
 }
 _z_string_svec_t _z_string_array_null(void) { return _z_string_svec_make(0); }
-_Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_string_svec_t, string_array, _z_string_array_check, _z_string_array_null,
-                              _z_string_array_copy, _z_string_svec_clear)
+_Z_OWNED_FUNCTIONS_VALUE_NO_COPY_IMPL(_z_string_svec_t, string_array, _z_string_array_check, _z_string_array_null,
+                                      _z_string_svec_clear)
 _Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_slice_t, slice, _z_slice_check, _z_slice_empty, _z_slice_copy, _z_slice_clear)
 _Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_bytes_t, bytes, _z_bytes_check, _z_bytes_null, _z_bytes_copy, _z_bytes_drop)