diff --git a/tests/document/test_class_methods.py b/tests/document/test_class_methods.py
index 4c35b796..f82808ba 100644
--- a/tests/document/test_class_methods.py
+++ b/tests/document/test_class_methods.py
@@ -177,7 +177,7 @@ class TestClassMethods(unittest.TestCase):
         assert BlogPostWithCustomField.compare_indexes() == {"missing": [], "extra": []}
 
     def test_compare_indexes_for_text_indexes(self):
-        """ Ensure that compare_indexes behaves correctly for text indexes """
+        """Ensure that compare_indexes behaves correctly for text indexes"""
 
         class Doc(Document):
             a = StringField()
diff --git a/tests/fields/test_file_field.py b/tests/fields/test_file_field.py
index b45db3f9..8c0db044 100644
--- a/tests/fields/test_file_field.py
+++ b/tests/fields/test_file_field.py
@@ -308,7 +308,7 @@ class TestFileField(MongoDBTestCase):
         assert test_file.the_file not in [{"test": 1}]
 
     def test_file_disk_space(self):
-        """ Test disk space usage when we delete/replace a file """
+        """Test disk space usage when we delete/replace a file"""
 
         class TestFile(Document):
             the_file = FileField()
diff --git a/tests/test_signals.py b/tests/test_signals.py
index 19707165..1d84347d 100644
--- a/tests/test_signals.py
+++ b/tests/test_signals.py
@@ -249,7 +249,7 @@ class TestSignal(unittest.TestCase):
         assert self.pre_signals == post_signals
 
     def test_model_signals(self):
-        """ Model saves should throw some signals. """
+        """Model saves should throw some signals."""
 
         def create_author():
             self.Author(name="Bill Shakespeare")
@@ -340,7 +340,7 @@ class TestSignal(unittest.TestCase):
         ]
 
     def test_signal_kwargs(self):
-        """ Make sure signal_kwargs is passed to signals calls. """
+        """Make sure signal_kwargs is passed to signals calls."""
 
         def live_and_let_die():
             a = self.Author(name="Bill Shakespeare")
@@ -385,7 +385,7 @@ class TestSignal(unittest.TestCase):
         ]
 
     def test_queryset_delete_signals(self):
-        """ Queryset delete should throw some signals. """
+        """Queryset delete should throw some signals."""
 
         self.Another(name="Bill Shakespeare").save()
         assert self.get_signal_output(self.Another.objects.delete) == [
@@ -396,7 +396,7 @@ class TestSignal(unittest.TestCase):
         ]
 
     def test_signals_with_explicit_doc_ids(self):
-        """ Model saves must have a created flag the first time."""
+        """Model saves must have a created flag the first time."""
         ei = self.ExplicitId(id=123)
         # post save must received the created flag, even if there's already
         # an object id present