diff --git a/barretenberg/cpp/src/barretenberg/goblin/mock_circuits.hpp b/barretenberg/cpp/src/barretenberg/goblin/mock_circuits.hpp
index 9fe3ff7cd4c..db98486ddbb 100644
--- a/barretenberg/cpp/src/barretenberg/goblin/mock_circuits.hpp
+++ b/barretenberg/cpp/src/barretenberg/goblin/mock_circuits.hpp
@@ -192,7 +192,7 @@ class GoblinMockCircuits {
         verifier1.verify_proof(function_accum.proof);
 
         // Execute recursive aggregation of previous kernel proof if one exists
-        if (!prev_kernel_accum.proof.proof_data.empty()) {
+        if (!prev_kernel_accum.proof.empty()) {
             RecursiveVerifier verifier2{ &builder, prev_kernel_accum.verification_key };
             verifier2.verify_proof(prev_kernel_accum.proof);
         }