diff --git a/cpp/src/prims/detail/sample_and_compute_local_nbr_indices.cuh b/cpp/src/prims/detail/sample_and_compute_local_nbr_indices.cuh
index 5ebc3dc8ae..dd0da77851 100644
--- a/cpp/src/prims/detail/sample_and_compute_local_nbr_indices.cuh
+++ b/cpp/src/prims/detail/sample_and_compute_local_nbr_indices.cuh
@@ -597,8 +597,6 @@ rmm::device_uvector<edge_t> compute_uniform_sampling_index_without_replacement(
   raft::random::RngState& rng_state,
   size_t K)
 {
-  assert(cugraph::invalid_edge_id_v<edge_t> == cugraph::ops::graph::INVALID_ID<edge_t>);
-
   edge_t mid_partition_degree_range_last = static_cast<edge_t>(K * 10);  // tuning parameter
   assert(mid_partition_degree_range_last > K);
   size_t high_partition_oversampling_K = K * 2;  // tuning parameter
@@ -1567,10 +1565,7 @@ uniform_sample_and_compute_local_nbr_indices(
   size_t K,
   bool with_replacement)
 {
-  using edge_t = typename GraphViewType::edge_type;
-
-  assert(cugraph::invalid_edge_id_v<edge_t> == cugraph::ops::graph::INVALID_ID<edge_t>);
-
+  using edge_t   = typename GraphViewType::edge_type;
   using vertex_t = typename GraphViewType::vertex_type;
   using key_t    = typename thrust::iterator_traits<KeyIterator>::value_type;
 
diff --git a/cpp/src/sampling/neighbor_sampling_impl.hpp b/cpp/src/sampling/neighbor_sampling_impl.hpp
index ccca71cdf2..ce580ea9b4 100644
--- a/cpp/src/sampling/neighbor_sampling_impl.hpp
+++ b/cpp/src/sampling/neighbor_sampling_impl.hpp
@@ -179,7 +179,7 @@ neighbor_sample_impl(raft::handle_t const& handle,
                     ? (fan_out.size() / num_edge_types)
                     : ((fan_out.size() / num_edge_types) + 1);
 
-  for (auto hop = 0; hop < num_hops; hop++) {
+  for (size_t hop = 0; hop < num_hops; ++hop) {
     for (auto edge_type_id = 0; edge_type_id < num_edge_types; edge_type_id++) {
       auto k_level = fan_out[(hop * num_edge_types) + edge_type_id];
       rmm::device_uvector<vertex_t> srcs(0, handle.get_stream());