diff --git a/tests/core/pyspec/eth2spec/test/altair/block_processing/sync_aggregate/test_process_sync_aggregate_random.py b/tests/core/pyspec/eth2spec/test/altair/block_processing/sync_aggregate/test_process_sync_aggregate_random.py
index 436e4d04b..d38c3fadf 100644
--- a/tests/core/pyspec/eth2spec/test/altair/block_processing/sync_aggregate/test_process_sync_aggregate_random.py
+++ b/tests/core/pyspec/eth2spec/test/altair/block_processing/sync_aggregate/test_process_sync_aggregate_random.py
@@ -28,7 +28,7 @@ from eth2spec.test.context import (
 
 
 def _test_harness_for_randomized_test_case(spec, state, expect_duplicates=False, participation_fn=None):
-    committee_indices = compute_committee_indices(spec, state, state.current_sync_committee)
+    committee_indices = compute_committee_indices(spec, state)
 
     if participation_fn:
         participating_indices = participation_fn(committee_indices)