diff --git a/server/szurubooru/search/base_search_config.py b/server/szurubooru/search/base_search_config.py
index a9b0e68..9f97973 100644
--- a/server/szurubooru/search/base_search_config.py
+++ b/server/szurubooru/search/base_search_config.py
@@ -62,11 +62,11 @@ class BaseSearchConfig(object):
         Decorate SQLAlchemy filter on given column using supplied criterion.
         '''
         if isinstance(criterion, criteria.PlainSearchCriterion):
-            expr = column.like(transformer(criterion.value))
+            expr = column.ilike(transformer(criterion.value))
         elif isinstance(criterion, criteria.ArraySearchCriterion):
             expr = sqlalchemy.sql.false()
             for value in criterion.values:
-                expr = expr | column.like(transformer(value))
+                expr = expr | column.ilike(transformer(value))
         elif isinstance(criterion, criteria.RangedSearchCriterion):
             raise szurubooru.errors.SearchError(
                 'Composite token %r is invalid in this context.' % (criterion,))
diff --git a/server/szurubooru/tests/search/test_tag_search_config.py b/server/szurubooru/tests/search/test_tag_search_config.py
index e03f038..2e834fc 100644
--- a/server/szurubooru/tests/search/test_tag_search_config.py
+++ b/server/szurubooru/tests/search/test_tag_search_config.py
@@ -22,6 +22,7 @@ def verify_unpaged(executor):
     ('t1', ['t1']),
     ('t2', ['t2']),
     ('t1,t2', ['t1', 't2']),
+    ('T1,T2', ['t1', 't2']),
 ])
 def test_filter_anonymous(verify_unpaged, tag_factory, input, expected_tag_names):
     db.session.add(tag_factory(names=['t1']))