diff --git a/asio/include/asio/detail/io_uring_descriptor_read_op.hpp b/asio/include/asio/detail/io_uring_descriptor_read_op.hpp
index 9f8cf70bca..c1f521dde2 100644
--- a/asio/include/asio/detail/io_uring_descriptor_read_op.hpp
+++ b/asio/include/asio/detail/io_uring_descriptor_read_op.hpp
@@ -63,7 +63,7 @@ class io_uring_descriptor_read_op_base : public io_uring_operation
     {
       ::io_uring_prep_read_fixed(sqe, o->descriptor_,
           o->bufs_.buffers()->iov_base, o->bufs_.buffers()->iov_len,
-          0, o->bufs_.registered_id().native_handle());
+          -1, o->bufs_.registered_id().native_handle());
     }
     else
     {
diff --git a/asio/include/asio/detail/io_uring_descriptor_write_op.hpp b/asio/include/asio/detail/io_uring_descriptor_write_op.hpp
index 090d644c7c..85c5bc523b 100644
--- a/asio/include/asio/detail/io_uring_descriptor_write_op.hpp
+++ b/asio/include/asio/detail/io_uring_descriptor_write_op.hpp
@@ -63,7 +63,7 @@ class io_uring_descriptor_write_op_base : public io_uring_operation
     {
       ::io_uring_prep_write_fixed(sqe, o->descriptor_,
           o->bufs_.buffers()->iov_base, o->bufs_.buffers()->iov_len,
-          0, o->bufs_.registered_id().native_handle());
+          -1, o->bufs_.registered_id().native_handle());
     }
     else
     {
diff --git a/asio/include/asio/detail/io_uring_socket_recv_op.hpp b/asio/include/asio/detail/io_uring_socket_recv_op.hpp
index b1936c1ab9..2c5099a5e3 100644
--- a/asio/include/asio/detail/io_uring_socket_recv_op.hpp
+++ b/asio/include/asio/detail/io_uring_socket_recv_op.hpp
@@ -70,7 +70,7 @@ class io_uring_socket_recv_op_base : public io_uring_operation
     {
       ::io_uring_prep_read_fixed(sqe, o->socket_,
           o->bufs_.buffers()->iov_base, o->bufs_.buffers()->iov_len,
-          0, o->bufs_.registered_id().native_handle());
+          -1, o->bufs_.registered_id().native_handle());
     }
     else
     {
diff --git a/asio/include/asio/detail/io_uring_socket_send_op.hpp b/asio/include/asio/detail/io_uring_socket_send_op.hpp
index 2f57dae920..75debd6846 100644
--- a/asio/include/asio/detail/io_uring_socket_send_op.hpp
+++ b/asio/include/asio/detail/io_uring_socket_send_op.hpp
@@ -69,7 +69,7 @@ class io_uring_socket_send_op_base : public io_uring_operation
     {
       ::io_uring_prep_write_fixed(sqe, o->socket_,
           o->bufs_.buffers()->iov_base, o->bufs_.buffers()->iov_len,
-          0, o->bufs_.registered_id().native_handle());
+          -1, o->bufs_.registered_id().native_handle());
     }
     else
     {