diff --git a/tests/core/pyspec/eth2spec/test/helpers/custody.py b/tests/core/pyspec/eth2spec/test/helpers/custody.py
index 1993e566d..f63a07099 100644
--- a/tests/core/pyspec/eth2spec/test/helpers/custody.py
+++ b/tests/core/pyspec/eth2spec/test/helpers/custody.py
@@ -165,7 +165,7 @@ def get_custody_test_vector(bytelength, offset=0):
     return (b"".join((i + offset).to_bytes(4, "little") for i in range(ints)))[:bytelength]
 
 
-def get_shard_transition(spec, start_slot, block_lengths):
+def get_sample_shard_transition(spec, start_slot, block_lengths):
     b = [get_block_data_merkle_root(ByteList[spec.MAX_SHARD_BLOCK_SIZE](get_custody_test_vector(x)))
          for x in block_lengths]
     shard_transition = spec.ShardTransition(
@@ -197,7 +197,7 @@ def get_custody_slashable_test_vector(spec, custody_secret, length, slashable=Tr
 
 
 def get_custody_slashable_shard_transition(spec, start_slot, block_lengths, custody_secret, slashable=True):
-    shard_transition = get_shard_transition(spec, start_slot, block_lengths)
+    shard_transition = get_sample_shard_transition(spec, start_slot, block_lengths)
     slashable_test_vector = get_custody_slashable_test_vector(spec, custody_secret,
                                                               block_lengths[0], slashable=slashable)
     block_data = ByteList[spec.MAX_SHARD_BLOCK_SIZE](slashable_test_vector)
diff --git a/tests/core/pyspec/eth2spec/test/phase_1/block_processing/test_process_chunk_challenge.py b/tests/core/pyspec/eth2spec/test/phase_1/block_processing/test_process_chunk_challenge.py
index 94b1c3b11..bdb4325fd 100644
--- a/tests/core/pyspec/eth2spec/test/phase_1/block_processing/test_process_chunk_challenge.py
+++ b/tests/core/pyspec/eth2spec/test/phase_1/block_processing/test_process_chunk_challenge.py
@@ -1,7 +1,7 @@
 from eth2spec.test.helpers.custody import (
     get_valid_chunk_challenge,
     get_valid_custody_chunk_response,
-    get_shard_transition,
+    get_sample_shard_transition,
 )
 from eth2spec.test.helpers.attestations import (
     get_valid_on_time_attestation,
@@ -70,7 +70,7 @@ def test_challenge_appended(spec, state):
     transition_to(spec, state, state.slot + 1)
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -91,7 +91,7 @@ def test_challenge_empty_element_replaced(spec, state):
     transition_to(spec, state, state.slot + 1)
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -114,7 +114,7 @@ def test_duplicate_challenge(spec, state):
     transition_to(spec, state, state.slot + 1)
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -137,7 +137,7 @@ def test_second_challenge(spec, state):
     transition_to(spec, state, state.slot + 1)
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -163,7 +163,7 @@ def test_multiple_epochs_custody(spec, state):
 
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -185,7 +185,7 @@ def test_many_epochs_custody(spec, state):
 
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -207,7 +207,7 @@ def test_off_chain_attestation(spec, state):
 
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -225,7 +225,7 @@ def test_custody_response(spec, state):
 
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -253,7 +253,7 @@ def test_custody_response_multiple_epochs(spec, state):
 
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -281,7 +281,7 @@ def test_custody_response_many_epochs(spec, state):
 
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
diff --git a/tests/core/pyspec/eth2spec/test/phase_1/epoch_processing/test_process_challenge_deadlines.py b/tests/core/pyspec/eth2spec/test/phase_1/epoch_processing/test_process_challenge_deadlines.py
index 6590d8af9..f3675732a 100644
--- a/tests/core/pyspec/eth2spec/test/phase_1/epoch_processing/test_process_challenge_deadlines.py
+++ b/tests/core/pyspec/eth2spec/test/phase_1/epoch_processing/test_process_challenge_deadlines.py
@@ -1,6 +1,6 @@
 from eth2spec.test.helpers.custody import (
     get_valid_chunk_challenge,
-    get_shard_transition,
+    get_sample_shard_transition,
 )
 from eth2spec.test.helpers.attestations import (
     get_valid_on_time_attestation,
@@ -28,7 +28,7 @@ def test_validator_slashed_after_chunk_challenge(spec, state):
     transition_to(spec, state, state.slot + 1)
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
diff --git a/tests/core/pyspec/eth2spec/test/phase_1/epoch_processing/test_process_custody_final_updates.py b/tests/core/pyspec/eth2spec/test/phase_1/epoch_processing/test_process_custody_final_updates.py
index b9afe03bf..6ca6c8c99 100644
--- a/tests/core/pyspec/eth2spec/test/phase_1/epoch_processing/test_process_custody_final_updates.py
+++ b/tests/core/pyspec/eth2spec/test/phase_1/epoch_processing/test_process_custody_final_updates.py
@@ -2,7 +2,7 @@ from eth2spec.test.helpers.custody import (
     get_valid_chunk_challenge,
     get_valid_custody_chunk_response,
     get_valid_custody_key_reveal,
-    get_shard_transition
+    get_sample_shard_transition
 )
 from eth2spec.test.helpers.attestations import (
     get_valid_on_time_attestation,
@@ -66,7 +66,7 @@ def test_validator_withdrawal_suspend_after_chunk_challenge(spec, state):
     transition_to(spec, state, state.slot + 1)
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)
 
@@ -114,7 +114,7 @@ def test_validator_withdrawal_resume_after_chunk_challenge_response(spec, state)
     transition_to(spec, state, state.slot + 1)
     shard = 0
     offset_slots = spec.get_offset_slots(state, shard)
-    shard_transition = get_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
+    shard_transition = get_sample_shard_transition(spec, state.slot, [2**15 // 3] * len(offset_slots))
     attestation = get_valid_on_time_attestation(spec, state, index=shard, signed=True,
                                                 shard_transition=shard_transition)