diff --git a/cpp/test/neighbors/ann_nn_descent.cuh b/cpp/test/neighbors/ann_nn_descent.cuh
index 0590fe52e8..c06823993e 100644
--- a/cpp/test/neighbors/ann_nn_descent.cuh
+++ b/cpp/test/neighbors/ann_nn_descent.cuh
@@ -90,7 +90,7 @@ class AnnNNDescentTest : public ::testing::TestWithParam<AnnNNDescentInputs> {
         index_params.metric                    = ps.metric;
         index_params.graph_degree              = ps.graph_degree;
         index_params.intermediate_graph_degree = 2 * ps.graph_degree;
-        index_params.max_iterations            = 50;
+        index_params.max_iterations            = 100;
 
         auto database_view = raft::make_device_matrix_view<const DataT, int64_t>(
           (const DataT*)database.data(), ps.n_rows, ps.dim);