diff --git a/test_libs/pyspec/eth2spec/test/phase_0/block_processing/test_process_deposit.py b/test_libs/pyspec/eth2spec/test/phase_0/block_processing/test_process_deposit.py
index a40c120fb..2f60c6be2 100644
--- a/test_libs/pyspec/eth2spec/test/phase_0/block_processing/test_process_deposit.py
+++ b/test_libs/pyspec/eth2spec/test/phase_0/block_processing/test_process_deposit.py
@@ -113,20 +113,21 @@ def test_invalid_withdrawal_credentials_top_up(spec, state):
     # inconsistent withdrawal credentials, in top-ups, are allowed!
     yield from run_deposit_processing(spec, state, deposit, validator_index, valid=True, effective=True)
 
-
-@with_all_phases
-@spec_state_test
-def test_wrong_index(spec, state):
-    validator_index = len(state.validators)
-    amount = spec.MAX_EFFECTIVE_BALANCE
-    deposit = prepare_state_and_deposit(spec, state, validator_index, amount)
-
-    # mess up eth1_deposit_index
-    deposit.index = state.eth1_deposit_index + 1
-
-    sign_deposit_data(spec, state, deposit.data, privkeys[validator_index])
-
-    yield from run_deposit_processing(spec, state, deposit, validator_index, valid=False)
+# Deposit data temporarily has no index field.
+# SSZ typing catches that, and raises an exception. Test may be introduced back later
+# @with_all_phases
+# @spec_state_test
+# def test_wrong_index(spec, state):
+#     validator_index = len(state.validators)
+#     amount = spec.MAX_EFFECTIVE_BALANCE
+#     deposit = prepare_state_and_deposit(spec, state, validator_index, amount)
+#
+#     # mess up eth1_deposit_index
+#     deposit.index = state.eth1_deposit_index + 1
+#
+#     sign_deposit_data(spec, state, deposit.data, privkeys[validator_index])
+#
+#     yield from run_deposit_processing(spec, state, deposit, validator_index, valid=False)
 
 
 @with_all_phases