diff --git a/pddl/logic/base.py b/pddl/logic/base.py
index fbcc189..37d5669 100644
--- a/pddl/logic/base.py
+++ b/pddl/logic/base.py
@@ -17,7 +17,6 @@
 
 from pddl.helpers.base import ensure_set
 from pddl.helpers.cache_hash import cache_hash
-
 from pddl.logic.terms import Variable
 from pddl.parser.symbols import Symbols
 
diff --git a/pddl/parser/domain.py b/pddl/parser/domain.py
index 47dd631..8c7e6dc 100644
--- a/pddl/parser/domain.py
+++ b/pddl/parser/domain.py
@@ -21,13 +21,13 @@
 from pddl.helpers.base import assert_, safe_get, safe_index
 from pddl.logic.base import (
     And,
+    ExistsCondition,
     FalseFormula,
+    ForallCondition,
     Imply,
     Not,
     OneOf,
     Or,
-    ForallCondition,
-    ExistsCondition,
 )
 from pddl.logic.effects import AndEffect, Forall, When
 from pddl.logic.predicates import DerivedPredicate, EqualTo, Predicate
diff --git a/tests/test_action.py b/tests/test_action.py
index 88ea78b..23dfa7b 100644
--- a/tests/test_action.py
+++ b/tests/test_action.py
@@ -14,7 +14,7 @@
 
 from pddl.core import Action
 from pddl.logic import Predicate, Variable, variables
-from pddl.logic.base import Imply, OneOf, ForallCondition, ExistsCondition
+from pddl.logic.base import ExistsCondition, ForallCondition, Imply, OneOf
 
 
 class TestActionEmpty: