diff --git a/cpp/include/raft/spatial/knn/detail/ann_quantized.cuh b/cpp/include/raft/spatial/knn/detail/ann_quantized.cuh
index a27e36c25d..8238c99065 100644
--- a/cpp/include/raft/spatial/knn/detail/ann_quantized.cuh
+++ b/cpp/include/raft/spatial/knn/detail/ann_quantized.cuh
@@ -81,7 +81,7 @@ void approx_knn_build_index(raft::device_resources const& handle,
     params.pq_dim     = ivf_pq_pams->M;
     // TODO: handle ivf_pq_pams.usePrecomputedTables ?
 
-    auto index_view = raft::make_device_matrix_view<const T, IntType>(index_array, n, D);
+    auto index_view = raft::make_device_matrix_view<const T, int64_t>(index_array, n, D);
     index->ivf_pq   = std::make_unique<const neighbors::ivf_pq::index<int64_t>>(
       neighbors::ivf_pq::build(handle, params, index_view));
   } else {
@@ -116,9 +116,9 @@ void approx_knn_search(raft::device_resources const& handle,
     params.n_probes = index->nprobe;
 
     auto query_view =
-      raft::make_device_matrix_view<const T, IntType>(query_array, n, index->ivf_pq->dim());
-    auto indices_view   = raft::make_device_matrix_view<IntType, IntType>(indices, n, k);
-    auto distances_view = raft::make_device_matrix_view<float, IntType>(distances, n, k);
+      raft::make_device_matrix_view<const T, int64_t>(query_array, n, index->ivf_pq->dim());
+    auto indices_view   = raft::make_device_matrix_view<int64_t, int64_t>(indices, n, k);
+    auto distances_view = raft::make_device_matrix_view<float, int64_t>(distances, n, k);
     neighbors::ivf_pq::search(
       handle, params, *index->ivf_pq, query_view, k, indices_view, distances_view);
   } else {