diff --git a/server/szurubooru/model/post.py b/server/szurubooru/model/post.py
index d0de4855..a3af2372 100644
--- a/server/szurubooru/model/post.py
+++ b/server/szurubooru/model/post.py
@@ -205,7 +205,9 @@ class Post(Base):
         .correlate_except(PostTag))
 
     canvas_area = sa.orm.column_property(canvas_width * canvas_height)
-    canvas_aspect_ratio = sa.orm.column_property(canvas_width / canvas_height)
+    canvas_aspect_ratio = sa.orm.column_property(
+        sa.sql.expression.func.cast(canvas_width, sa.Float) /
+        sa.sql.expression.func.cast(canvas_height, sa.Float))
 
     @property
     def is_featured(self) -> bool:
diff --git a/server/szurubooru/tests/search/configs/test_post_search_config.py b/server/szurubooru/tests/search/configs/test_post_search_config.py
index 551e09c2..ef3cdd9d 100644
--- a/server/szurubooru/tests/search/configs/test_post_search_config.py
+++ b/server/szurubooru/tests/search/configs/test_post_search_config.py
@@ -431,23 +431,27 @@ def test_filter_by_file_size(
     ('image-area:90000', [3]),
     ('image-area:20000,90000', [1, 2, 3]),
     ('image-ar:1', [3]),
-    ('image-ar:..0.9', [1]),
+    ('image-ar:..0.9', [1, 4]),
     ('image-ar:1.1..', [2]),
     ('image-ar:1/1..1/1', [3]),
     ('image-ar:1:1..1:1', [3]),
+    ('image-ar:0.62..0.63', [4]),
 ])
 def test_filter_by_image_size(
         verify_unpaged, post_factory, input, expected_post_ids):
     post1 = post_factory(id=1)
     post2 = post_factory(id=2)
     post3 = post_factory(id=3)
+    post4 = post_factory(id=4)
     post1.canvas_width = 100
     post1.canvas_height = 200
     post2.canvas_width = 200
     post2.canvas_height = 100
     post3.canvas_width = 300
     post3.canvas_height = 300
-    db.session.add_all([post1, post2, post3])
+    post4.canvas_width = 480
+    post4.canvas_height = 767
+    db.session.add_all([post1, post2, post3, post4])
     db.session.flush()
     verify_unpaged(input, expected_post_ids)