diff --git a/app/logical/post_query_builder.rb b/app/logical/post_query_builder.rb
index c93d3c9a5..5578da617 100644
--- a/app/logical/post_query_builder.rb
+++ b/app/logical/post_query_builder.rb
@@ -1146,7 +1146,8 @@ class PostQueryBuilder
       def parse_range(string, type = :integer)
         range = case string
         when /\A(.+?)\.\.(.+)/
-          [:between, (parse_cast($1, type)..parse_cast($2, type))]
+          lo, hi = [parse_cast($1, type), parse_cast($2, type)].sort
+          [:between, (lo..hi)]
         when /\A<=(.+)/, /\A\.\.(.+)/
           [:lteq, parse_cast($1, type)]
         when /\A<(.+)/
@@ -1180,8 +1181,6 @@ class PostQueryBuilder
 
       def reverse_range(range)
         case range
-        in [:between, range]
-          [:between, (range.end..range.begin)]
         in [:lteq, value]
           [:gteq, value]
         in [:lt, value]
diff --git a/test/unit/post_query_builder_test.rb b/test/unit/post_query_builder_test.rb
index 60c6249b5..ba02fc97e 100644
--- a/test/unit/post_query_builder_test.rb
+++ b/test/unit/post_query_builder_test.rb
@@ -142,6 +142,7 @@ class PostQueryBuilderTest < ActiveSupport::TestCase
       assert_tag_match([posts[1], posts[0]], "id:<=#{posts[1].id}")
       assert_tag_match([posts[2], posts[0]], "id:#{posts[0].id},#{posts[2].id}")
       assert_tag_match(posts.reverse, "id:#{posts[0].id}..#{posts[2].id}")
+      assert_tag_match(posts.reverse, "id:#{posts[2].id}..#{posts[0].id}")
 
       assert_tag_match([], "id:#{posts[0].id} id:#{posts[2].id}")
       assert_tag_match([posts[1]], "id:>#{posts[0].id} id:<#{posts[2].id}")
@@ -420,6 +421,7 @@ class PostQueryBuilderTest < ActiveSupport::TestCase
       assert_tag_match([post], "age:>0s")
       assert_tag_match([post], "age:>=0s")
       assert_tag_match([post], "age:0s..1m")
+      assert_tag_match([post], "age:1m..0s")
 
       assert_tag_match([], "age:>1y")
       assert_tag_match([], "age:>=1y")