diff --git a/barretenberg/cpp/src/barretenberg/join_split_example/proofs/join_split/join_split.test.cpp b/barretenberg/cpp/src/barretenberg/join_split_example/proofs/join_split/join_split.test.cpp
index 86c0444bf4f..1377ebf1055 100644
--- a/barretenberg/cpp/src/barretenberg/join_split_example/proofs/join_split/join_split.test.cpp
+++ b/barretenberg/cpp/src/barretenberg/join_split_example/proofs/join_split/join_split.test.cpp
@@ -709,7 +709,7 @@ TEST_F(join_split_tests, test_0_input_notes_and_detect_circuit_change)
 
     constexpr uint32_t CIRCUIT_GATE_COUNT = 184517;
     constexpr uint32_t GATES_NEXT_POWER_OF_TWO = 524288;
-    const uint256_t VK_HASH("92ad42c79e00f5b510833bad0ca5da66c224ac410c1e3602e5b6733f7186112c");
+    const uint256_t VK_HASH("787c464414a2c2e3332314ff528bd236b13133c269c5704505a0f3a3ad56ad57");
 
     auto number_of_gates_js = result.number_of_gates;
     std::cout << get_verification_key()->sha256_hash() << std::endl;
diff --git a/barretenberg/cpp/src/barretenberg/proof_system/types/circuit_type.hpp b/barretenberg/cpp/src/barretenberg/proof_system/types/circuit_type.hpp
index d134af16715..71960c19119 100644
--- a/barretenberg/cpp/src/barretenberg/proof_system/types/circuit_type.hpp
+++ b/barretenberg/cpp/src/barretenberg/proof_system/types/circuit_type.hpp
@@ -3,7 +3,7 @@
 #include <cstdint>
 
 namespace proof_system {
-enum class CircuitType : uint32_t { STANDARD, TURBO, ULTRA, UNDEFINED };
+enum class CircuitType : uint32_t { STANDARD = 0, ULTRA = 2, UNDEFINED = 3 };
 
 template <typename T, typename... U>
 concept IsAnyOf = (std::same_as<T, U> || ...);
diff --git a/circuits/cpp/src/aztec3/circuits/kernel/private/utils.cpp b/circuits/cpp/src/aztec3/circuits/kernel/private/utils.cpp
index 0b4b9b32b92..3c4e8c3501b 100644
--- a/circuits/cpp/src/aztec3/circuits/kernel/private/utils.cpp
+++ b/circuits/cpp/src/aztec3/circuits/kernel/private/utils.cpp
@@ -91,7 +91,7 @@ std::shared_ptr<NT::VK> fake_vk()
 {
     std::map<std::string, NT::bn254_point> commitments;
     commitments["FAKE"] = *new NT::bn254_point(NT::fq(0), NT::fq(0));
-    NT::VKData vk_data = { .circuit_type = static_cast<uint32_t>(1),
+    NT::VKData vk_data = { .circuit_type = static_cast<uint32_t>(CircuitType::ULTRA),
                            .circuit_size = 2048,
                            .num_public_inputs = 116,
                            .commitments = commitments,