diff --git a/server/szurubooru/func/posts.py b/server/szurubooru/func/posts.py
index ef21383..b39ee11 100644
--- a/server/szurubooru/func/posts.py
+++ b/server/szurubooru/func/posts.py
@@ -63,8 +63,6 @@ def serialize_note(note):
     }
 
 def serialize_post(post, authenticated_user, options=None):
-    default_category = tag_categories.try_get_default_category()
-    default_category_name = default_category.name if default_category else None
     return util.serialize_entity(
         post,
         {
@@ -83,13 +81,7 @@ def serialize_post(post, authenticated_user, options=None):
             'thumbnailUrl': lambda: get_post_thumbnail_url(post),
             'flags': lambda: post.flags,
             'tags': lambda: [
-                tag.names[0].name for tag in sorted(
-                    post.tags,
-                    key=lambda tag: (
-                        default_category_name == tag.category.name,
-                        tag.category.name,
-                        tag.names[0].name)
-                )],
+                tag.names[0].name for tag in tags.sort_tags(post.tags)],
             'relations': lambda: sorted(
                 {
                     post['id']:
diff --git a/server/szurubooru/func/tags.py b/server/szurubooru/func/tags.py
index 0d988ed..b29eb60 100644
--- a/server/szurubooru/func/tags.py
+++ b/server/szurubooru/func/tags.py
@@ -36,6 +36,17 @@ def _get_default_category_name():
     else:
         return DEFAULT_CATEGORY_NAME
 
+def sort_tags(tags):
+    default_category = tag_categories.try_get_default_category()
+    default_category_name = default_category.name if default_category else None
+    return sorted(
+        tags,
+        key=lambda tag: (
+            default_category_name == tag.category.name,
+            tag.category.name,
+            tag.names[0].name)
+    )
+
 def serialize_tag(tag, options=None):
     return util.serialize_entity(
         tag,
@@ -47,9 +58,11 @@ def serialize_tag(tag, options=None):
             'lastEditTime': lambda: tag.last_edit_time,
             'usages': lambda: tag.post_count,
             'suggestions': lambda: [
-                relation.names[0].name for relation in tag.suggestions],
+                relation.names[0].name
+                    for relation in sort_tags(tag.suggestions)],
             'implications': lambda: [
-                relation.names[0].name for relation in tag.implications],
+                relation.names[0].name
+                    for relation in sort_tags(tag.implications)],
             'snapshots': lambda: snapshots.get_serialized_history(tag),
         },
         options)
diff --git a/server/szurubooru/tests/api/test_tag_creating.py b/server/szurubooru/tests/api/test_tag_creating.py
index 666b940..24d7682 100644
--- a/server/szurubooru/tests/api/test_tag_creating.py
+++ b/server/szurubooru/tests/api/test_tag_creating.py
@@ -5,8 +5,8 @@ from szurubooru import api, config, db, errors
 from szurubooru.func import util, tags, tag_categories
 
 def assert_relations(relations, expected_tag_names):
-    actual_names = [rel.names[0].name for rel in relations]
-    assert actual_names == expected_tag_names
+    actual_names = sorted([rel.names[0].name for rel in relations])
+    assert actual_names == sorted(expected_tag_names)
 
 @pytest.fixture
 def test_ctx(
@@ -186,7 +186,7 @@ def test_creating_new_category(test_ctx):
         'category': 'meta',
         'suggestions': ['sug', 'shared'],
         'implications': ['shared', 'imp'],
-    }, ['sug', 'shared'], ['shared', 'imp']),
+    }, ['shared', 'sug'], ['imp', 'shared']),
     # duplicate relations
     ({
         'names': ['main'],
diff --git a/server/szurubooru/tests/api/test_tag_updating.py b/server/szurubooru/tests/api/test_tag_updating.py
index 778dcc5..a0b275d 100644
--- a/server/szurubooru/tests/api/test_tag_updating.py
+++ b/server/szurubooru/tests/api/test_tag_updating.py
@@ -5,8 +5,8 @@ from szurubooru import api, config, db, errors
 from szurubooru.func import util, tags, tag_categories
 
 def assert_relations(relations, expected_tag_names):
-    actual_names = [rel.names[0].name for rel in relations]
-    assert actual_names == expected_tag_names
+    actual_names = sorted([rel.names[0].name for rel in relations])
+    assert actual_names == sorted(expected_tag_names)
 
 @pytest.fixture
 def test_ctx(
@@ -176,7 +176,7 @@ def test_trying_to_use_existing_name(test_ctx, dup_name):
     ({
         'suggestions': ['sug', 'shared'],
         'implications': ['shared', 'imp'],
-    }, ['sug', 'shared'], ['shared', 'imp']),
+    }, ['shared', 'sug'], ['imp', 'shared']),
     # duplicate relations
     ({
         'suggestions': ['sug', 'SUG'],