diff --git a/include/zenoh-pico/api/macros.h b/include/zenoh-pico/api/macros.h
index 28b30382e..d429a32da 100644
--- a/include/zenoh-pico/api/macros.h
+++ b/include/zenoh-pico/api/macros.h
@@ -295,10 +295,6 @@
  */
 #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,                     \
diff --git a/include/zenoh-pico/api/primitives.h b/include/zenoh-pico/api/primitives.h
index 05c56ad31..a43b979cb 100644
--- a/include/zenoh-pico/api/primitives.h
+++ b/include/zenoh-pico/api/primitives.h
@@ -1358,10 +1358,10 @@ int8_t z_closure_zid(z_owned_closure_zid_t *closure, z_id_handler_t call, z_drop
 _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_NO_COPY_DEF(session)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(subscriber)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(publisher)
+_Z_OWNED_FUNCTIONS_NO_COPY_DEF(queryable)
 _Z_OWNED_FUNCTIONS_DEF(hello)
 _Z_OWNED_FUNCTIONS_DEF(reply)
 _Z_OWNED_FUNCTIONS_DEF(string_array)
diff --git a/src/api/api.c b/src/api/api.c
index e54c85d79..73ab254c1 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;
     }