diff --git a/cpp/include/cugraph/utilities/thrust_tuple_utils.hpp b/cpp/include/cugraph/utilities/thrust_tuple_utils.hpp
index 29b9d132ef8..d9f794e3f50 100644
--- a/cpp/include/cugraph/utilities/thrust_tuple_utils.hpp
+++ b/cpp/include/cugraph/utilities/thrust_tuple_utils.hpp
@@ -119,7 +119,7 @@ template <typename... Ts>
 struct is_thrust_tuple_of_arithmetic<thrust::tuple<Ts...>> {
  private:
   template <typename T>
-  static constexpr bool is_valid = std::is_arithmetic_v<T> || std::is_same_v<T, thrust::null_type>;
+  static constexpr bool is_valid = std::is_arithmetic_v<T>;
 
  public:
   static constexpr bool value = (... && is_valid<Ts>);
@@ -132,7 +132,7 @@ template <typename... Ts>
 struct is_thrust_tuple_of_integral<thrust::tuple<Ts...>> {
  private:
   template <typename T>
-  static constexpr bool is_valid = std::is_integral_v<T> || std::is_same_v<T, thrust::null_type>;
+  static constexpr bool is_valid = std::is_integral_v<T>;
 
  public:
   static constexpr bool value = (... && is_valid<Ts>);