diff --git a/cpp/include/raft_runtime/matrix/select_k.hpp b/cpp/include/raft_runtime/matrix/select_k.hpp
deleted file mode 100644
index ec50293aa6..0000000000
--- a/cpp/include/raft_runtime/matrix/select_k.hpp
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * SPDX-FileCopyrightText: Copyright (c) 2023-2026, NVIDIA CORPORATION.
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#pragma once
-
-#include <raft/core/detail/macros.hpp>
-#include <raft/core/device_mdspan.hpp>
-#include <raft/core/resources.hpp>
-
-#include <optional>
-
-namespace raft::runtime::matrix {
-void select_k(const resources& handle,
-              raft::device_matrix_view<const float, int64_t, row_major> in_val,
-              std::optional<raft::device_matrix_view<const int64_t, int64_t, row_major>> in_idx,
-              raft::device_matrix_view<float, int64_t, row_major> out_val,
-              raft::device_matrix_view<int64_t, int64_t, row_major> out_idx,
-              bool select_min);
-
-}  // namespace raft::runtime::matrix