diff --git a/tests/patched/blockchain_tools.py b/tests/patched/blockchain_tools.py
index 48ed3488d7e8475816e095a7b78108699d9a6d4d..ad615dc188eed91541a42f6221a5df601dbb5570 100644
--- a/tests/patched/blockchain_tools.py
+++ b/tests/patched/blockchain_tools.py
@@ -12,6 +12,10 @@ mocked_block = {
     "hash": "0000010D30B1284D34123E036B7BE0A449AE9F2B928A77D7D20E3BDEAC7EE14C",
 }
 
+fake_block_uid = BlockUID(
+    48000, "0000010D30B1284D34123E036B7BE0A449AE9F2B928A77D7D20E3BDEAC7EE14C"
+)
+
 
 async def patched_params(self):
     return {
diff --git a/tests/test_membership.py b/tests/test_membership.py
index f1cbd819bab737e692a2c608dacde9afda72fe5e..4b90b74a7749cd4af1237c799e97126e57540c31 100644
--- a/tests/test_membership.py
+++ b/tests/test_membership.py
@@ -32,6 +32,7 @@ from patched.blockchain_tools import (
     patched_params,
     patched_block,
     patched_head_block,
+    fake_block_uid,
 )
 from patched.wot import (
     patched_wot_requirements_one_pending,
@@ -62,9 +63,7 @@ identity_timestamp = block_uid(
     "0-E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855"
 )
 identity_uid = "toto"
-membership_timestamp = block_uid(
-    "48000-0000010D30B1284D34123E036B7BE0A449AE9F2B928A77D7D20E3BDEAC7EE14C"
-)
+membership_timestamp = fake_block_uid
 
 
 def patched_auth_method():
diff --git a/tests/test_unit_tx.py b/tests/test_unit_tx.py
index 70f978d0b0bf86c0f6df771c13c1bfd0d4ef755a..3c294e96652440f7d3d2e51707a30a9f5f6727f6 100644
--- a/tests/test_unit_tx.py
+++ b/tests/test_unit_tx.py
@@ -31,13 +31,12 @@ from duniterpy.documents.transaction import (
     Unlock,
     SIGParameter,
 )
-from duniterpy.documents.block_uid import BlockUID
 
 from patched.wot import patched_is_member
 from patched.money import patched_get_sources, patched_ud_value
 from patched.test_constants import mock_ud_value
 from patched.tools import patched_currency_symbol
-from patched.blockchain_tools import patched_head_block
+from patched.blockchain_tools import patched_head_block, fake_block_uid
 
 
 # truncBase()
@@ -309,9 +308,7 @@ async def test_transaction_amount(
 result1 = Transaction(
     version=10,
     currency="g1",
-    blockstamp=BlockUID(
-        48000, "0000010D30B1284D34123E036B7BE0A449AE9F2B928A77D7D20E3BDEAC7EE14C"
-    ),
+    blockstamp=fake_block_uid,
     locktime=0,
     issuers=["BFb5yv8z1fowR6Z8mBXTALy5z7gHfMU976WtXhmRsUMh"],
     inputs=[