diff --git a/config.yaml.dist b/config.yaml.dist
index 6193505d..d2b4e9c4 100644
--- a/config.yaml.dist
+++ b/config.yaml.dist
@@ -21,7 +21,7 @@ test_database: 'sqlite:///:memory:' # required for running the test suite
 
 
 # Delete thumbnails and source files on post delete
-# Original functionality is false, to mitigate the impacts of admins going
+# Original functionality is no, to mitigate the impacts of admins going
 # on unchecked post purges.
 delete_source_files: no
 
diff --git a/server/szurubooru/func/posts.py b/server/szurubooru/func/posts.py
index e35e2e12..86274616 100644
--- a/server/szurubooru/func/posts.py
+++ b/server/szurubooru/func/posts.py
@@ -399,7 +399,7 @@ def _after_post_update(
 def _before_post_delete(
         _mapper: Any, _connection: Any, post: model.Post) -> None:
     if post.post_id:
-        image_hash.delete_image(str(post.post_id))
+        image_hash.delete_image(post.post_id)
         if config.config['delete_source_files']:
             files.delete(get_post_content_path(post))
             files.delete(get_post_thumbnail_path(post))
diff --git a/server/szurubooru/tests/api/test_post_deleting.py b/server/szurubooru/tests/api/test_post_deleting.py
index 7e588472..b5ca8319 100644
--- a/server/szurubooru/tests/api/test_post_deleting.py
+++ b/server/szurubooru/tests/api/test_post_deleting.py
@@ -8,10 +8,14 @@ from szurubooru.func import posts, snapshots
 
 @pytest.fixture(autouse=True)
 def inject_config(config_injector):
-    config_injector({'secret': 'secret',
-                     'data_dir': '',
-                     'delete_source_files': False,
-                     'privileges': {'posts:delete': model.User.RANK_REGULAR}})
+    config_injector({
+        'secret': 'secret',
+        'data_dir': '',
+        'delete_source_files': False,
+        'privileges': {
+            'posts:delete': model.User.RANK_REGULAR
+        }
+    })
 
 
 def test_deleting(user_factory, post_factory, context_factory):
diff --git a/server/szurubooru/tests/func/test_posts.py b/server/szurubooru/tests/func/test_posts.py
index b4c41ade..dd256574 100644
--- a/server/szurubooru/tests/func/test_posts.py
+++ b/server/szurubooru/tests/func/test_posts.py
@@ -1,9 +1,7 @@
 from datetime import datetime
 from unittest.mock import patch
-
 import os
 import pytest
-
 from szurubooru import db, model
 from szurubooru.func import (
     posts, users, comments, tags, images, files, util, image_hash)
@@ -843,8 +841,8 @@ def test_merge_posts_moves_child_relations(post_factory, config_injector):
     assert posts.get_post_by_id(target_post.post_id).relation_count == 1
 
 
-def test_merge_posts_doesnt_duplicate_child_relations(post_factory,
-                                                      config_injector):
+def test_merge_posts_doesnt_duplicate_child_relations(
+        post_factory, config_injector):
     config_injector({'delete_source_files': False})
     source_post = post_factory()
     target_post = post_factory()
@@ -879,8 +877,8 @@ def test_merge_posts_moves_parent_relations(post_factory, config_injector):
     assert posts.get_post_by_id(related_post.post_id).relation_count == 1
 
 
-def test_merge_posts_doesnt_duplicate_parent_relations(post_factory,
-                                                       config_injector):
+def test_merge_posts_doesnt_duplicate_parent_relations(
+        post_factory, config_injector):
     config_injector({'delete_source_files': False})
     source_post = post_factory()
     target_post = post_factory()
@@ -898,8 +896,8 @@ def test_merge_posts_doesnt_duplicate_parent_relations(post_factory,
     assert posts.get_post_by_id(related_post.post_id).relation_count == 1
 
 
-def test_merge_posts_doesnt_create_relation_loop_for_children(post_factory,
-                                                              config_injector):
+def test_merge_posts_doesnt_create_relation_loop_for_children(
+        post_factory, config_injector):
     config_injector({'delete_source_files': False})
     source_post = post_factory()
     target_post = post_factory()
diff --git a/server/szurubooru/tests/model/test_post.py b/server/szurubooru/tests/model/test_post.py
index 704c5f1c..ee691460 100644
--- a/server/szurubooru/tests/model/test_post.py
+++ b/server/szurubooru/tests/model/test_post.py
@@ -1,15 +1,15 @@
 from datetime import datetime
-
 import pytest
-
 from szurubooru import db, model
 
 
 @pytest.fixture(autouse=True)
 def inject_config(config_injector):
-    config_injector({'secret': 'secret',
-                     'data_dir': '',
-                     'delete_source_files': False})
+    config_injector({
+        'secret': 'secret',
+        'data_dir': '',
+        'delete_source_files': False
+    })
 
 
 def test_saving_post(post_factory, user_factory, tag_factory):
diff --git a/server/szurubooru/tests/model/test_tag.py b/server/szurubooru/tests/model/test_tag.py
index c22a6ac2..b677eeff 100644
--- a/server/szurubooru/tests/model/test_tag.py
+++ b/server/szurubooru/tests/model/test_tag.py
@@ -1,14 +1,15 @@
 from datetime import datetime
-
 import pytest
-
 from szurubooru import db, model
 
 
 @pytest.fixture(autouse=True)
 def inject_config(config_injector):
-    config_injector({'delete_source_files': False,
-                     'secret': 'secret', 'data_dir': ''})
+    config_injector({
+        'delete_source_files': False,
+        'secret': 'secret',
+        'data_dir': ''
+    })
 
 
 def test_saving_tag(tag_factory):