diff --git a/cardano_node_tests/tests/common.py b/cardano_node_tests/tests/common.py
index 2600c3c07..fa3c9d03e 100644
--- a/cardano_node_tests/tests/common.py
+++ b/cardano_node_tests/tests/common.py
@@ -22,6 +22,8 @@
 MAX_INT64 = (2**63) - 1
 MAX_UINT64 = (2**64) - 1
 
+COMPAT_ERAS = ("shelley", "allegra", "mary", "alonzo", "babbage")
+
 ADDR_ALPHABET = string.ascii_lowercase + string.digits
 
 ORDER5_BYRON = (
@@ -156,6 +158,8 @@
     ids=("plutus_v2", "plutus_v3"),
 )
 
+PARAM_COMPAT_ERAS = pytest.mark.parametrize("era", COMPAT_ERAS)
+
 
 # Intervals for `wait_for_epoch_interval` (negative values are counted from the end of an epoch)
 if cluster_nodes.get_cluster_type().type == cluster_nodes.ClusterType.LOCAL:
diff --git a/cardano_node_tests/tests/test_addr_registration.py b/cardano_node_tests/tests/test_addr_registration.py
index 6ee92465b..d15b67649 100644
--- a/cardano_node_tests/tests/test_addr_registration.py
+++ b/cardano_node_tests/tests/test_addr_registration.py
@@ -816,7 +816,7 @@ def _submit_tx(
             raise ValueError(err)
 
     @allure.link(helpers.get_vcs_link())
-    @pytest.mark.parametrize("era", ("shelley", "allegra", "mary", "alonzo", "babbage"))
+    @common.PARAM_COMPAT_ERAS
     @pytest.mark.testnets
     @pytest.mark.smoke
     def test_legacy_stake_addr_registration_rejected_in_conway(
diff --git a/cardano_node_tests/tests/test_delegation.py b/cardano_node_tests/tests/test_delegation.py
index 26b880247..678d28920 100644
--- a/cardano_node_tests/tests/test_delegation.py
+++ b/cardano_node_tests/tests/test_delegation.py
@@ -1320,7 +1320,7 @@ def test_delegatee_not_registered(
             ), exc_value
 
     @allure.link(helpers.get_vcs_link())
-    @pytest.mark.parametrize("era", ("shelley", "allegra", "mary", "alonzo", "babbage"))
+    @common.PARAM_COMPAT_ERAS
     @pytest.mark.testnets
     @pytest.mark.smoke
     def test_legacy_stake_delegation_rejected_in_conway(
diff --git a/cardano_node_tests/tests/test_pools.py b/cardano_node_tests/tests/test_pools.py
index 24f655353..2942c6ce0 100644
--- a/cardano_node_tests/tests/test_pools.py
+++ b/cardano_node_tests/tests/test_pools.py
@@ -2610,7 +2610,7 @@ def test_stake_pool_long_metadata_url(
             )
 
     @allure.link(helpers.get_vcs_link())
-    @pytest.mark.parametrize("era", ("shelley", "allegra", "mary", "alonzo", "babbage"))
+    @common.PARAM_COMPAT_ERAS
     @pytest.mark.testnets
     @pytest.mark.smoke
     def test_legacy_pool_registration_rejected_in_conway(
diff --git a/cardano_node_tests/tests/tests_conway/test_conway.py b/cardano_node_tests/tests/tests_conway/test_conway.py
index 595c09e09..a186c5d78 100644
--- a/cardano_node_tests/tests/tests_conway/test_conway.py
+++ b/cardano_node_tests/tests/tests_conway/test_conway.py
@@ -212,7 +212,7 @@ def test_ratify_state_fields(self, cluster: clusterlib.ClusterLib):
 
 class TestNegativeLegacyGovernance:
     @allure.link(helpers.get_vcs_link())
-    @pytest.mark.parametrize("era", ("shelley", "allegra", "mary", "alonzo", "babbage"))
+    @common.PARAM_COMPAT_ERAS
     @pytest.mark.smoke
     def test_mixed_legacy_govaction_and_conway_vote_cert_fails(
         self,
diff --git a/cardano_node_tests/tests/tests_conway/test_pparam_update.py b/cardano_node_tests/tests/tests_conway/test_pparam_update.py
index dfa573e44..39e5f98dd 100644
--- a/cardano_node_tests/tests/tests_conway/test_pparam_update.py
+++ b/cardano_node_tests/tests/tests_conway/test_pparam_update.py
@@ -1462,7 +1462,7 @@ class TestLegacyProposals:
 
     @allure.link(helpers.get_vcs_link())
     @submit_utils.PARAM_SUBMIT_METHOD
-    @pytest.mark.parametrize("era", ("shelley", "allegra", "mary", "alonzo", "babbage"))
+    @common.PARAM_COMPAT_ERAS
     @pytest.mark.smoke
     def test_legacy_proposal_submit(
         self,
diff --git a/cardano_node_tests/tests/tests_conway/test_treasury_withdrawals.py b/cardano_node_tests/tests/tests_conway/test_treasury_withdrawals.py
index daa327bca..8776ae876 100644
--- a/cardano_node_tests/tests/tests_conway/test_treasury_withdrawals.py
+++ b/cardano_node_tests/tests/tests_conway/test_treasury_withdrawals.py
@@ -736,7 +736,7 @@ def payment_addr(self, cluster_manager, cluster):
         )
 
     @allure.link(helpers.get_vcs_link())
-    @pytest.mark.parametrize("era", ("shelley", "allegra", "mary", "alonzo", "babbage"))
+    @common.PARAM_COMPAT_ERAS
     @pytest.mark.parametrize(
         "mir_cert",
         ("to_treasury", "to_rewards", "treasury_to_addr", "reserves_to_addr"),