diff --git a/tests/managers.py b/tests/managers.py
deleted file mode 100644
index 640420cb..00000000
--- a/tests/managers.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from model_utils.managers import SoftDeletableQuerySet
-
-
-class CustomSoftDeleteQuerySet(SoftDeletableQuerySet):
-    def only_read(self):
-        return self.filter(is_read=True)
diff --git a/tests/models.py b/tests/models.py
index b5b4f37c..442200f2 100644
--- a/tests/models.py
+++ b/tests/models.py
@@ -14,6 +14,7 @@
     JoinManager,
     QueryManager,
     SoftDeletableManager,
+    SoftDeletableQuerySet,
 )
 from model_utils.models import (
     SoftDeletableModel,
@@ -24,7 +25,6 @@
 )
 from model_utils.tracker import FieldTracker, ModelTracker
 from tests.fields import MutableField
-from tests.managers import CustomSoftDeleteQuerySet
 
 
 class InheritanceManagerTestRelated(models.Model):
@@ -352,6 +352,11 @@ class SoftDeletable(SoftDeletableModel):
     all_objects: ClassVar[Manager[SoftDeletable]] = models.Manager()
 
 
+class CustomSoftDeleteQuerySet(SoftDeletableQuerySet):
+    def only_read(self):
+        return self.filter(is_read=True)
+
+
 class CustomSoftDelete(SoftDeletableModel):
     is_read = models.BooleanField(default=False)