diff --git a/beacon_node/beacon_chain/src/payload_attestation_verification/tests.rs b/beacon_node/beacon_chain/src/payload_attestation_verification/tests.rs
index 6d2150eb59..bc2987eb75 100644
--- a/beacon_node/beacon_chain/src/payload_attestation_verification/tests.rs
+++ b/beacon_node/beacon_chain/src/payload_attestation_verification/tests.rs
@@ -326,10 +326,8 @@ async fn ptc_cache_is_primed_at_gloas_fork_boundary() {
         .mock_execution_layer()
         .build();
 
-    harness.extend_to_slot(fork_boundary_slot).await;
-
     for slot in test_slots {
-        harness.chain.slot_clock.set_slot(slot.as_u64());
+        harness.extend_to_slot(slot).await;
         assert!(
             harness
                 .chain